Many users that we support use multiple versions of CAESAR II every day, depending on what project they are on.  There is an easy way to choose which default program version you want to open CAESAR II 2013 or 2014 files with.  

1. First, right click your file and go to properties at the end.

2. Go to change on the General tab.

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3.Go to browse on the "Open With" tab.

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Now choose the c2.exe that you want to open up your file by default.  For example:

C:\Program Files (x86)\Intergraph CAS\CAESAR II 2014\c2.exe to open up the file in CAESAR 2014 by default.

C:\Program Files (x86)\Intergraph CAS\CAESAR II 2013\c2.exe to open up the file in CAESAR 2013 by default.