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Two copies of PSSE on the same computer

Is it safe to run two copies of PSSE on the same computer. I want to install BOTH PSSE version number 32 and version number 33. Together on the same computer.

It is very important:

  • that I don't lose any data
  • my Python scripts continue working

If anyone has done this installation on their computer, can you tell me the problems you faced? Or tricks that you used? Thanks ahead

anderss's avatar
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anderss
asked 2012-10-12 19:56:33 -0500
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2 Answers

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I don't have experience with v32 and v33 on the same system, but I do have v30 and v32. We ran into an issue where, because they take different version of python, you have to explicitly set up the environment between the two. You may also run into this issue because v32 and v33 also run different python environments.

To set up the environment, we run this bat file before import psspy:

SET PATH=C:\PROGRA~1\PTI\PSSE30\PSSBIN;C:\PROGRA~1\PTI\PSSE30\PSSLIB;%PATH% 
c: 
cd c:\ 
actv <LICENSE KEY> PYTHON.EXE 
actv <LICENSE KEY> PYTHONW.EXE

Refer to: https://psspy.org/psse-help-forum/question/563/what-does-actvexe-do/ for more info on actv.

Best of luck.

jsexauer's avatar
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jsexauer
answered 2012-10-16 13:35:53 -0500, updated 2012-10-17 07:31:02 -0500
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Hi, I've seen a dual installation of PSSEv32 and PSSEv33 on the same computer before. These both use a different version of Python. Python2.5 is used by PSSEv32 and Python2.7 is used by PSSEv33.

You may run into a problem where if you try to run a Python script that you previously wrote for PSSEv32, it will now fail to run because the default Python is version 2.7

JervisW's avatar
1.3k
JervisW
answered 2012-10-14 20:06:10 -0500
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