PROPSYS.dll problem

In past days I'm getting an error info when running Defraggler. It says this "This application failed to start because propsys.dll was not found. Re-installing the application may fix this problem".

After I press OK, defraggler starts and runs normally. But I would still like to fix that error to avoid such pop-up window.

Have you tried re-installing defraggler over the top of your install to see if it replaces the .dll?

propsys.dll is a Microsoft library, so I don't know it's relation to DF (something to do with search from the Product Name offered by it's file properties).

if reinstalling the normal build of DF still produces the error, try the portable build instead.

do you get the error simply starting DF, or when doing a particular function in DF, or just when hitting the Defrag button?

I tried reinstalling already, of course. That didn't help. This happens only when starting DF. After I press OK, it opens normally with everything working well.

did you try the portable build?

Now I did, and the same pop-up appears again. I guess I'll have to live with that. :( Anyway, this doesn't happen when running CCleaner or Speccy.

have you tried playing its game and checking you have propsys.dll?

mine lives here; C:\Windows\System32

Just thinking out loud here... I wonder if Whiplash has Defraggler set to replace Windows Defragger or not in settings....

what is your OS and DF versions?