AMPL Java Error

[Phuc Nguyen]

Hi,

I ran into this error related to Java when opening AMPL (screenshot attached). 

My computer is a MacBook.

Could you check in and let me know what I need to do to fix this please ? 

Thank you! 

Phuc

[Jonah Ho]

Looks like a file I/O permissions issue. Can you make sure AMPL has full permissions in Settings -> Security and Privacy -> Privacy? 

AMPL might be located in Full Disk Access or Files and folders. 

Sent from my iPhone

On Oct 26, 2022, at 11:01 AM, Phuc Nguyen <phucdn...@gmail.com> wrote:

Hi,

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[AMPL Google Group]

Dear Phuc,

If the issue is related to file permissions you should be able to grant access in
System Preferences > Security & Privacy > Privacy > Files and Folders.

If AMPLIDE does not appear there it was probably blocked by macOS.
To unlock the software do the following:

• In your AMPL folder, control-click the ampl.command icon, and select Open in the menu that pops up.
• If a box containing a warning message (“macOS cannot verify the developer . . .”) pops up, click Open in that box.
• A Terminal window labeled ampl.command will appear. After a few seconds, you will see ampl: in the last line in the window. You can then terminate the window, by clicking the red button at the upper left. (If a box containing a warning message Do you want to terminate running processes in this window? pops up, click Terminate in that box.)

Hope this helps!
Best regards,

Nicolau

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Nicolau Santos
am...@googlegroups.com

{#HS:2049498414-112523#}

On Wed, Oct 26, 2022 at 8:12 PM UTC, AMPL Modeling Language <am...@googlegroups.com> wrote:

Looks like a file I/O permissions issue. Can you make sure AMPL has full permissions in Settings -> Security and Privacy -> Privacy?

AMPL might be located in Full Disk Access or Files and folders.

[Phuc Nguyen]

Hi Nicolau,

I went through the steps you described before (when I first tried to run the software). So I did not have to go through the steps again this time when I clicked open ampl.command. 

The ampl.command gives me this (screenshot). I am on a university license. It is expired by now. Could that be the problem?

Also, I checked my Security & Privacy. It gives me this (screenshot). Is there anything more I can do to fix this? 

Thanks. Regards

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Best regards,

Phuc Nguyen

 

Tel: +84 932 673 939 (Whatsapp available)

Email: phucdn...@gmail.com

[AMPL Google Group]

Dear Phuc,
The permissions are ok but the licence is an issue (already expired).
Can you confirm with your Professor if He has a more recent bundle? (If not I'll point you alternatives and check potential issues with a more recent version of the IDE).
Best regards,

Nicolau

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Nicolau Santos
am...@googlegroups.com

{#HS:2049498414-112523#}

On Thu, Oct 27, 2022 at 6:52 AM UTC, AMPL Modeling Language <am...@googlegroups.com> wrote:

Hi Nicolau,

I went through the steps you described before (when I first tried to run the software). So I did not have to go through the steps again this time when I clicked open ampl.command.

The ampl.command gives me this (screenshot). I am on a university license. It is expired by now. Could that be the problem?

Also, I checked my Security & Privacy. It gives me this (screenshot). Is there anything more I can do to fix this?

Thanks. Regards

On Wed, Oct 26, 2022 at 10:30 PM UTC, AMPL Google Group <am...@googlegroups.com> wrote:

Dear Phuc,

If the issue is related to file permissions you should be able to grant access in
System Preferences > Security & Privacy > Privacy > Files and Folders.

If AMPLIDE does not appear there it was probably blocked by macOS.
To unlock the software do the following:

• In your AMPL folder, control-click the ampl.command icon, and select Open in the menu that pops up.
• If a box containing a warning message (“macOS cannot verify the developer . . .”) pops up, click Open in that box.
• A Terminal window labeled ampl.command will appear. After a few seconds, you will see ampl: in the last line in the window. You can then terminate the window, by clicking the red button at the upper left. (If a box containing a warning message Do you want to terminate running processes in this window? pops up, click Terminate in that box.)

Hope this helps!
Best regards,

Nicolau

--
Nicolau Santos
am...@googlegroups.com

[Phuc Nguyen]

Hi Nicolau,

So the error is caused by my license being expired ? Not something technical ? 

My Professor is unfortunately travelling for a conference at the moment (reported & found out about this earlier today). I can ask him but it will take quite some time because he will not be back until mid next week. 

Is there anything we can try in the meantime ?

Best,

Phuc

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[AMPL Google Group]

Dear Phuc,
I don't know what's causing the issues in your machine but I don't think we should troubleshoot issues with an old bundle.

I suggest the following, go to
https://ampl.com/start-free-now/
and install the size-limited demo so that we can see if it works normally.

With the size limited demo you can test small models. If you immediately need to use it for bigger problems you can install the Community Edition with a 30 day trial of commercial solvers.

Best regards,

Nicolau

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Nicolau Santos
am...@googlegroups.com

{#HS:2049498414-112523#}

On Thu, Oct 27, 2022 at 7:52 PM UTC, AMPL Modeling Language <am...@googlegroups.com> wrote:

Hi Nicolau,

So the error is caused by my license being expired ? Not something technical ?

My Professor is unfortunately travelling for a conference at the moment (reported & found out about this earlier today). I can ask him but it will take quite some time because he will not be back until mid next week.

Is there anything we can try in the meantime ?

Best,
Phuc

On Thu, Oct 27, 2022 at 6:37 PM UTC, AMPL Google Group <am...@googlegroups.com> wrote:

Dear Phuc,

The permissions are ok but the licence is an issue (already expired).
Can you confirm with your Professor if He has a more recent bundle? (If not I'll point you alternatives and check potential issues with a more recent version of the IDE).
Best regards,

Nicolau

--
Nicolau Santos
am...@googlegroups.com