Thanks, I found the RX5 plugins in C:\Program Files (x86)\Vstplugins. I don't know why they are there. Does anyone else have RX5? I'd be grateful if someone would check the location. If I have 64 bit plugins I'd like them to be in thecorrect folder. Or perhaps RX5 64 bit uses 32 bit plugins? I'm confused.
RX5 has 32-bit and 64-bit plugins, you can find them in the two Vstplugins folders if you do have installed both versions. The plugin files are not the same in the two folders. If you see only one folder, you may have installed only one version.
I have copied some iZotope 32-bit plugins (not RX but the Mastering And Repair Suite and iZotope Vinyl) to a folder I have named C:\Program Files\Vstplugins\32-bit-not-available-as-64-bit\ and they do show up and work in VP14. I only have C:\Program Files\VSTplugins\ set as my default VST search folder.
But if there are 32 and 64-bit versions of a VST plugin, you would be better off using the 64-bit version in Vegas, so a reinstall of RX seems your best option. I guess it might prompt you during installation for which versions you want to install.