2015-01-07 16:22:44 -0500 | commented answer | Install OpenStudio 1.5 I am also having this error running Windows 8.1. The message: Error loading OpenStudio Plug-In: 193: %1 is not a valid Win32 application. - C:/Program Files(x86)/OpenStudio1.5.0/Ruby/openstudio/openstudioutilititiescore.so. Any help would be appreciated. |