Mplayer2_fixup Entry change appeared in Spybot s&d teatimer.exe

Not long after I installed the trial version of Adobe AfterEffects 6,5 I recieved the following warning from Spybot s&d's teatimer:

Problem is however that I think it was a legitimate registry change. I navigated to C\WINNT\inf\unregmp2.exe and right clicked to properties, and the company name was Microsoft Corporation. Am I right in thinking the file is safe, or is it a baddie of some description?

Does anyone know what it's meant to do? Also, if it was run as a part of the Adobe AfterEffects setup will this affect the program adversely if the registry remains unchanged as it currently is?