Originally posted by: MMulk

I downloaded and installed the CPLEX Optimization Studio Academic Research 12.3 on a Windows XP SP3 system.

I downloaded the access.ilm file into C:\ILOG|ILM and set the environmental variable ILOG_LICENSE_FILE to the C:\ILOG\ILM folder.

Cplex still won't read the license. I can echo %ILOG_LICENSE_FILE and it returns the C:\ILOG\ILM folder. When I use the command type C:\ILOG\ILM\access.ilm it displays the license info in the command window.

I have checked in the command window that access.ilm is not really access.ilm.txt, and used rename to change it back and forth a few times to make sure.

Cplex did read the license file one time, and then with no reboot, and no changes, never read the license again.

I have tried changing the location of the access.ilm to different folders and resetting the environmental variable, no luck.

I have reinstalled cplex, no luck.

I have redownloaded the license, no luck.

I don't know what else to try.
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Originally posted by: SystemAdmin

Just to be clear, if you run the CPLEX interactive optimizer from a command prompt (in a DOS window where you've confirmed that the environment variable is set and the license file types properly) you get the error message? I want to be sure that it happens at the DOS prompt and not just in the IDE.

If that's the case, the only thing I can think of is to attach the license file here so that someone can look and make sure there are no funky characters in it.

Paul

Mathematicians are like Frenchmen: whenever you say something to them, they translate it into their own language, and at once it is something entirely different. (Goethe)
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Originally posted by: MMulk

Thank you for your reply.

Yes, the error occurs at the DOS prompt. I don't use the IDE, as the program I am using with cplex uses the DOS prompt.

I just opened two command prompts (one to show the license, another to show the error) to take screenshots of the error, and even though I haven't touched anything since I first posted, now cplex reads the license.

I don't know what is going on.

I just worry that this will happen again tomorrow.
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Originally posted by: Laci Ladanyi

ILOG_LICENSE_FILE should point to the license file not to the folder where it is. Set it to C:\ILOG\ILM\access.ilm and you should be ok.

--Laci
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Originally posted by: BrendanTracey

Pointing the variable to the file and not the folder worked for me.
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Originally posted by: RS7R_Azin_S.

Cplex still won't read the license. I can echo %ILOG_LICENSE_FILE and it returns the C:\ILOG\ILM folder. When I use the command type C:\ILOG\ILM\access.ilm it displays the license info in the command window.

I have checked in the command window that access.ilm is not really access.ilm.txt, and used rename to change it back and forth a few times to make sure.

Cplex did read the license file one time, and then with no reboot, and no changes, never read the license again.

I have tried changing the location of the access.ilm to different folders and resetting the environmental variable, no luck.

I have reinstalled cplex, no luck.

I have redownloaded the license, no luck.

I don't know what else to try.
#CPLEXOptimizers
#DecisionOptimization

Originally posted by: SystemAdmin

As mentioned in the thread, the ILOG_LICENSE_FILE environment variable should point towards the actual license file and not just the folder where its present. Thus, please set ILOG_LICENSE_FILE to C:\ILOG\ILM\access.ilm and not just C:\ILOG\ILM.
Hope this helps.
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