I can take a 5 second video clip directly from my hard drive and as soon as I try to split it somewhere while using moviemaker, it automatically "loses" the data, and gives me an error to "fix" the rest of the movie.. 

I use moviemaker to create business related videos, and this after all these years??? Computers and software are supposed to make advances as years roll forward, not become completely useless. No amount of uninstalling and reinstalling moviemaker does any good whatsoever. The software has been rendered useless and is no longer a part of my video editing tools because of its CONSTANT propensity to crash for NOTHING... a FIVE SECOND VIDEO located on the C: drive and it cannot find the file????

This software has become a ridiculous waste of time to try and use.