Crystal Reports Activex Viewer 11.5
Lutero Chaloux
The question: Is there any risks such as OS stability issues when installing an extremely old version of Crystal reports activex on Windows 10? I think we may be on version 10 of the active x but is there a way to verify?
Crystal reports activex viewer 11.5
This is due to updated security in Windows 10. There are no OS stability risks. However, ActiveX is old technology that has security flaws and there is no guarantee that it will work in future updates of Windows. If the web app was written in-house, you probably need to consider updating it to either a full .NET app or a Java app using the appropriate Crystal SDK. Neither of these SDKs are currently using ActiveX to display reports - they're using HTML5 instead.
I have three projects. One is a .NET 2.0 Windows Forms application (.NET App), one is a VB6 Standard EXE application (VB App), and the other is a VB6 ActiveX DLL (VB DLL). The .NET App references the VB DLL which is already registered. This VB DLL essentially launches Crystal Reports. The VB App launches the .NET App via the Shell() command. Here's what happens:
If I run the .NET App directly, I can open a Crystal Reports document with no problem. However, when the VB App launches the .NET App via the Shell() command, when the .NET App attempts to open the Crystal Reports document, I get an Out of Memory error.
Now here's the kicker - this worked on Windows XP, but when we attempt to launch it in Windows 7 64-bit, we run into this issue. I'm sure there's got to be a simple solution out there for it. Any takers?
Update 3: So today I discovered that the reason the .NET App was able to open the report when it was launched directly was because I was launching it within Visual Studio. When I tried the executable outside Visual Studio, the error returns. I noticed that Visual Studio, as of 2005, began using a vshost.exe to launch windows applications to speed up debugging startup: I disabled the vshost feature, the out of memory error returned. So I suppose the question is, what is this vshost process doing that allows it to work on windows 7?
Update 4: I was able to compile the VB6 DLL with debug information and load the source and debug information into Visual Studio and step through it when the .NET app executes the VB6 code. The Out of Memory exception comes from this line:
Update 5: I have narrowed down the problem to the Crystal Reports ActiveX Viewer. I started a new VB ActiveX DLL project from scratch and started with only a form. This worked every which way. Then I added the Crystal ActiveX Report Viewer Library 11.5 - and the error returned! It is definitely the Report Viewer. I'm told that this problem may be able to be fixed by a simple registry adjustment.
I've got such problems when I use 32Bit C/C++-Dll's with .NET code running on 64Bit Windows.If your .NET project has "any platform" as target then the runtime compiles the code to 64Bit on a 64Bit Windows, on a 32Bit Windows I think you'll have no problems.
I found a workaround solution to the out-of-memory error; however, it is not an allowable solution. Apparently, this issue is resolved in future versions of the crviewer.dll but Mister Uher makes it very clear in his response to my question here: that we are not allowed to use the versions after 11.5 due to licensing restrictions. It would seem this is a common question he receives. Unfortunately, we are forced to accept the response that we are to upgrade our applications to .NET. If anyone else is feeling adventurous enough to attempt to troubleshoot the out-of-memory exception, I would am happy to leave my sample project above available to anyone who wishes to venture it. Best of luck to anyone else feeling my pain of CR 11.5 interop support.
Not sure if this information will help, but I have faced similar problems in the past with crystal and a Web Forms applications. I resolved it by ensuring that the application pool has the 'Enable 32 bit applications' option checked? You can find it under the advanced settings -> General....
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