First time ever I have got this message...double checked it is installed (was using it only last week - but thought I would check anyway) I even set the SD folder in the CW 64 bit programs VST folder to search..DLL is there, as I said I was using it last week..
 
Anyone else having difficulty?
 
EDIT: I just re-installed SD 3 from the install files, did a VST scan, VST scan still shows the correct number of VSTi's including SD3 - however it still refuses to load, and tells me it may not be installed....
 

 

Just went and had a look at the VST folder (On Programs) and found even though I had just re-installed SD, the original installation file date was showing. IE this new install do not overwrite..I am going to try it again after deleting the existing installation of SD...

Seems strange to work one day and fail the next. Is is possible another software install messed up the MS Redistribution libs Session Drummer depends on? Maybe this http://forum.cakewalk.com/FindPost/2950515 will help.

Thanks Scook yep really weird  - fwiw, I just did a reset and the a full rescan, SD is not even shoing up on the VST drop down list now..It is installed. I even added the SD3 folder as a specific folder to scan..nada!
 
I will check that link.
 
Cheers

That Visual C++ Redist did it, thanks Scook. I can't think of what has been installed to over-ride it???
Anyway the link if anyone else needs it is http://www.microsoft.com/en-us/download/details.aspx?id=30679
 
Oh I had to do a VST Reset and then a full scan again, for anyone else who comes across this in a search.