2.6-RC6

Critical fix so that new versions are backward compatible. To install this version:

1. Uninstall previous version manually:
   a) Go to your OpenEIS folder (e.g., C:\OpenEIS-2.x) and run "unins000.exe". You can do it through Add/Remove Programs feature as well.
   b) Remove OpenEIS folder (e.g., C:\OpenEIS-2.x)
   c) Remove C:\Users{your user name}.openeis folder (note: there is "." before "openeis")
2. Fresh install this version

All later installers do not require you to do (1b) and (1c). More importantly, you can access all previous data, analyses, and projects (they are under C:\Users{your user name}.openeis)