I am running SP2.0 and I am now trying to upgrade to SP3.1. After reading some helpful hints in this forum about getting around the HUGE file sizes when using the automatic upgrade feature, I downloaded just the SW 2.0 to 3.1 file. The problem is when I perform the upgrade, the software is looking for the file "English_i386_Solidworks.msi". I found the file on the original DVD, but for some reason, the software doesn't like it. Does anyone have any thoughts, or am I doing something wrong? Thanks for the help.