Problem using LR PhotoMatix plugin

I just upgraded to 2.3 in LR and now the photomatix plugin doesn't work the same. I was able to export my images but upon saving, I get this error:

Your image has been saved but there was an error exporting it. The most likely reason is that the following file has been removed from your computer: c:\Program Fiells\Adobe\Adobe Photoshop Lightroom 2\lightroom.exe.

I removed the plugin and added it again with the LR Plugins dialog but no difference.

Anyone got some experience with this?

LR 2.3 is Pre-Release, right? You should report this to Adobe Labs.

I can't speak to this, because I am not upgrading until it's released.

You may need to re-install Photomatix. It may need to put a .dll somewhere that got deleted when you upgraded LR.