I have been using my SW2014 SP0 on a new computer for about 2 months.
Today it started to have problem with rotating my parts with the scroll wheel.
I have not changed a thing in my setup or options.
I figured it was the battery on my wireless mouse, but no so.
I can zoom fine, rotate with arrows but not the wheel button.
I opened anther file, same thing... new parts as well.
I saved and closed the file I was working on and now when I open it, I get:
"Could not load Solidworks DLL:GdtAnalysisSupport.dll"
The odd thing is that it does it for this file only.
I still can not rotate the parts in the other files even though they open without this error.
I have reinstall SW to no avail.
I have tried some of the online suggestion (.net reload, etc...) without success
Anyone with ideas?
The DLL issue could be related to Microsoft® update KB 3072630. Check here on how to resolve it: Instability in SOLIDWORKS due to conflict with Microsoft KB3072630
For mouse, can you try a different mouse just to verify that it not the middle button issue. Also check setting for the mouse in case middle button function has changed.