>fewer than 50 Norton users have these files.
the message says it all.
It's deleting them based on reputation
not that they contain virus or malware.
And reputation being that that less than some large number of their end users don't have that *.exe or *.dll.
Its protecting your system from any software created by any company that isn't a major player or who hasn't genuflected to Norton and submitted their software to it white list testing.
For this reason you will run into this with software from a number of small shops.
I ran into the same thing with my MenuMagic software and submitted it to them for white listing.
Considering that Norton has possibly tens of millions of users - MenuMagic will never have a high enough reputation to not have problem with such a system. If you work in a major corporation and never use anything but megacorp applications it might be a great system - but for anyone else this system is bullsh1t.
You should:
* Check Norton's web site on how to white list or otherwise deal with this issue so you can get your software.
* Advise the plugin company about the Norton issue and that they should consider submitting their software for white listing.
* Once your subscription to Norton has expired switch to ESET or Kaspersky.