I have Sonar Artist and am having some compatibility\crashing issues when I use my favorite compressor plugin (Pro-C by Fabfilter) and I think it's because it's 32bit. Is there a 32 bit version of Sonar Artist somewhere? I can't seem to find it if there is. I am running Win10.

Use the 64bit version of Pro-C. Fabfilter makes both 32 and 64bit versions of their plug-ins including Pro-C and Pro-C 2.
 
SONAR Artist does have 32 and 64bit versions. By default, the Command Center installs the version appropriate for your OS. To get the 32/64bit option on 64bit Windows go into the Command Center setup (the gear in the upper right of the Command Center UI) and enable "Verbose Install."
 

Ah excellent, thank you!