Hello!

I am curious why you would like to do unpack an .aimmspack?

If I look at the release notes, since Jan 2017, you cannot open aimmspack with development licenses:

AIMMS 4.31.1.825 Release (The AIMMS 4.31.1.825 Release was released on January 25, 2017 Build 4.31.1.825)

PLEASE NOTE: From this version onwards, it is not possible anymore to open encrypted projects or .aimmspack files using a developer license of AIMMS. The reason is that encrypted projects or .aimmspack files are aimed at model deployment, while development licenses are not for that purpose. Those projects/files can still be opened using deployment licenses.

Maybe you could share more on your objectives.

Thank you

I’d prefer not to inconvenience users with constant updates and manual installations (i.e., launching AIMMS, loading an .aimmspack file, and creating a project directory). Instead, my plan is to implement an automated process that unpacks the .aimmspack file and updates the application remotely whenever it's ready. 

I was avised by aimms support to use:
 

echo on

rmdir UserProjectDir /s /q
mkdir UserProjectDir 

AimmsCmd.exe --unpack-folder UserProjectDir MyProject.aimmspack

but it does not work always. Sometimes works but the command window remains open