I can help here, or maybe get help. I just did a fresh Platinum install, reinstalled all of my plugins, but all of my projects are opening up with missing plugins even though I have those same plugins installed, recognized by plugin manager. Is there a way to direct the 'missing plugin' error box to the correct instance of the plugin?
 
If so, would help me out a lot...

I might have already identified my problem, but it leads to another question - I installed vst3 versions of all of my effects for this installation, when I'd previously been using vst2...I'm guessing the plugin manager won't automatically redirect vst2 plugins to their vst3 versions, but is there a way for me to manually do this?

1. Did you install your plugins in exactly same folder/path as they were before?
2. If so, have you added the relevant path(s) to the Plug In Manager scan paths?

jonboper
I might have already identified my problem, but it leads to another question - I installed vst3 versions of all of my effects for this installation, when I'd previously been using vst2...I'm guessing the plugin manager won't automatically redirect vst2 plugins to their vst3 versions, but is there a way for me to manually do this?

It depends on the plug-in and VST3 migration preference settings. More info about the migration process here.

Thanks scook...that's a good resource but it doesn't help me as I've already checked the appropriate boxes. It seems like it should work - FabFilter and Melda plugins - but for whatever reason doesn't.
 

Unfortunately migration is only automatic if Fabfilter and MeldaProduction implement the feature. It has been some time since I installed the VST2 version of their plug-ins. I did not add the blog with the implementation details. Here it is.