This File Is A Trusteddwg Last Saved By An Autodesk Application Or Autodesk Licensed Application

[Abigayle Laurenitis]

Weare using VW 2008 and have used it to export .dwg files for clients and consultants with good success. My biggest hang-up is on the AutoCAD side, where opening an exported VW file prompts the following warning message: "This DWG file was saved by an application that was not developed or licensed by Autodesk. What do you want to do?"

I know how to make this message go away on the AutoCAD side, but we have some government clients with whom I would rather not have the "we don't use AutoCAD" discussion. Does anyone know if VW 2010 addresses this problem?

Unless, of course, they really want to get into an in-depth discussion of a government entity requiring a proprietary vendor-specific file format (especially when neutral open source standards ARE available) which smacks of restraint of trade, recognized on both federal and state legal circles. Just as the Texas Facilities Commission.

Yes - I am speaking of both a local and a US federal government client that mandates a specific brand and version of software for file creation. The federal government client would never allow us to specify a specific brand/model for their project.

I have found that re-saving a VW export using either AutoCAD LT 2011 or the dwg convert tool in Autodesk's TrueView does not eliminate the warning message. This was a little disconcerting until I discovered the following solution:

Re-packaging the file using "eTransmit" in AutoCAD LT and then extracting it back out fixes the problem. I don't know what the eTransmit process does to the file that re-saving does not do, but this appears to be one solution. Upon opening an eTransmitted file, the command line tells me "This file is a TrustedDWG last saved by an Autodesk application."

I figured that I could used BricsCAD ver 13, until I was done with a project, then save all the drawings using Autocad LT 2012 to get rid of the warning below, but it remains even after I save the drawings using AutoCad.

"Non Autodesk DWG. This DWG file was saved by a software application that was

not developed or licensed by Autodesk. Autodesk cannot guarantee the

application compatibility or integrity of this file."

Non Autodesk DWG. This DWG file was saved by a software application that was

not developed or licensed by Autodesk. Autodesk cannot guarantee the

application compatibility or integrity of this file.

..........................

I don't think that educating the customer in this particular case is going to work here, but setting the variable to 0 seems to give the right result. Unfortunately that would mean running a script on all the drawings to save.

To give the rest of the community members and myself a better idea of what your issue seems to be please create a AutoCAD screencast video. This is a free application that basically records everything on your computer and captures commands used.

Hello there.

I have not been able to open a dwg that I had previously unhappily opened in the 2014 LT version.

"AutoDesk dwg." This file is a TrustedWWG is saved in an autodesk application or autodesk licensed .... "information is coming out of the line.

The file opens but I can not see a layer even though all of the layers are open.

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- [Instructor] In this chapter we will learn, about the basic DWG concepts, such as file formats, drawing units, using templates, object properties, and coordinate input, as well as user coordinate systems or UCS. Open the file for chapter two, using DWG files.dwg. First, a little history on the DWG file format. The DWG file format is one of the most common design formats and is used and found in nearly any design environment. DWG is the AutoCAD file format, and is used internally by Autodesk, in AutoCAD, Revit, Inventor, and many other products, as well as thousands of third party applications. The REALDWG software offers full access to all 2D and 3D data, including the design geometry, text, and metadata associated with the file. REALDWG is what Bentley uses to integrate DWG into the MicroStation environment. The DWG file format has been around since 1982. But it has undergone several version updates throughout the years. In 2008, Autodesk and Bentley systems agreed on an exchange of software library technologies, including the Autodesk REALDWG. To improve the ability to read and write, each company's respective DWG and DGN formats in a mixed environment with greater fidelity. In addition, the two companies agreed to facilitate interoperability between their AEC applications. You've probably heard the term, TrustedDWG. So what is a TrustedDWG? TrustedDWG functionality and Autodesk software, identifies DWG files that were not last saved by an Autodesk product or a REALDWG software license. This functionality identifies files that Autodesk may not be able to support, and informs the user that Autodesk cannot guarantee the integrity or compatibility of the file with AutoCAD, or any other Autodesk application. Starting in AutoCAD 2007, users can specify whether they would like AutoCAD to notify them when the DWG file they are opening was saved using an application that was not created by an Autodesk product, or a product using REALDWG. So when you save the DWG file using MicroStation, and you have REALDWG installed, the resulting file is considered a REALDWG file. Starting in V8i, Bentley integrated REALDWG software into MicroStation to improve the DWG file format interoperability. Prior to V8i, if you created a DWG file using MicroStation, it was not a REALDWG file, and it will be flagged when you open it in AutoCAD. This doesn't mean it isn't usable. It just means that Autodesk does not guarantee the contents of the file to be compatible with their products. Let me demonstrate. Open the file for chapter two, MicroStation REALDWG example.dwg. Here you can see the warning concerning the DWG file format. You can continue to open the file, or you can cancel opening the file. I will continue to open the file, and in the status bar, you can see that it is not a trusted DWG file here. If you use a lot of these older DWG files for MicroStation, you might want to turn off this warning, by changing the system variable, OS Options, and turn off all warnings by setting it to zero. AutoCAD can open many different file types. You can open a DWG, which is the standard drawing file, a DWS, which is a drawing standards file, a DXF, which is a drawing exchange file format, and a DWT, which is a drawing template file similar to the seed file in MicroStation. But in AutoCAD, it has its own extension type. AutoCAD can also overlay these file types. So you can overlay a DWF, a DWFX, which are drawing web formats, a PDF, or a DGN file from MicroStation. An overlay is not exactly the same as a reference file, and we'll discuss that in a future course. You can also import many additional file types, as shown here. Next, let's look at the units that are defined in a DWG file. The drawing units dialogue controls the precision and format for coordinates, distances, and angles in the current drawing. The units command can be found at these locations. Key in the command units. In the drawing units dialog, you can see that length defines the current length, format and precision for distance measurements. The type defines the current display format for units of measure. These values can be architectural, decimal, engineering, fractional, and scientific. The engineering and architectural formats will produce feet and inches displays. And assumes that the default drawing unit represents one inch. You can also define the precision which defines the number of decimal places or fractional units displayed for linear measurements. The angle defines the current angle format, and precision for the angle measurements. The type defines the current display format for the angles. Precision, defines the precision displayed for angles. And clockwise, controls the direction for positive angles, either in a clockwise or counterclockwise direction. The insert scale setting controls the scale for blocks and drawings that are inserted into the current drawing. When a blocker drawing is defined using different units from the current drawing, the insertion scale value corrects the mismatch. You use the unitless definition to prevent any rescaling of inserted graphics regardless of different units. This is similar to using the true scale setting in MicroStation. The sample output displays an example of the current settings for both the units and angles. And the lighting setting controls the unit of measurement for the intensity of photometric lights in the current drawing. Go ahead and pick Okay, to close this dialog. Now let's talk about the difference between AutoCAD and MicroStation units. There is no character designation to separate units in AutoCAD. Like in MicroStation when we use the colon or semicolon to separate the master units and sub units. A single value input is interpreted as a unit. This unit designation is whatever the user wants; inches, feet, meters, millimeters, centimeters or even miles. If two separate units are needed to be input, no spaces are allowed in the distance value. So when using the foot designation, the units must be defined as a foot unit setting, such as engineering or architectural. If not, the designation is not interpreted as a unit designator. I'll demonstrate this in a little bit. When using feet and inches, the units must be separated by a unit designator. In this case, the tick mark, or the foot mark. And the inches must be defined with no designator. You can use a dash to separate inches and fractions. Remember, no spaces are allowed when defining a unit. Not quite as friendly as MicroStation, but less confusing without the master sub units to worry about. Here is an example of how I would key in precision in AutoCAD. If my distance is two foot, I can key in the format's 24, or two foot if I'm using engineering or architectural units. One foot six inches, can be keyed in as 18, or one foot six. Remember, no spaces between the foot and the six. I can key in 3.75 feet, by just keying in 3.75 or 3.75 feet. Six inches, is keyed in as six or point five feet. And one foot six and seven sixteenths of an inch, could be keyed in as 18-7/16, or one foot six-seven 16th. Now let's talk about a couple of settings that you're used to in MicroStation. There is no setting that stores and active angle in AutoCAD. Angles are specified during each command as needed. There is also no setting that stores an active scale in AutoCAD. Scales are specified during each command as needed. By default in AutoCAD, the coordinate readout displays the coordinates in the status bar here, and they are displayed based on the unit setting that you selected during the units command. These coordinates are updated continuously based on your cursor movement in the drawing file. If the coordinates are not displayed in the status bar, use the customization button here on the status bar to turn on the coordinates display. These coordinates can be displayed using four different formats. Right click on the status bar coordinate display, to change the coordinate format type. I can select between relative, absolute, geographic or specific. This is similar to using the TP mode in MicroStation. First, relative displays coordinates relative to the point you most recently specified. This option is available only when you are specifying multiple points, distances or angles. Absolute, displays the coordinates relative to the current user coordinate system or UCS. Geographic displays coordinates relative to the geographic coordinate system specified for this drawing. This option is only available if the drawing contains geographical location data. And specific, updates coordinates only when you specify points. Here's the tip. You can double click on the coordinates in the status bar to disable the dynamic update. When disabled, the coordinates are only updated when you specify points in the drawing. Remember, if the status bar does not fit in the width of the screen, there may be a flicker or blinking in the interface display, and you will need to split the layout tabs and the status bar into separate lines. So let's look at how you can input AutoCAD coordinate systems.

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