Crashes after deleting first measures

Running version 0.9.5, revision 2012, WIndows Vista Home, Service Pack 2, 3 meg RAM
Using PersonalCopy Lite v4r1, (PCLite.sf2) Sound Font,
//www.sf2midi.com/soundfonts/file-detail/pclite-sf2-2582.html
did the same with the original sound font.

Create a new score, any number of voices. Create notes in the second, third and so on measures. Plays fine. Time delete empty measures at start of score. Hit play, Message box appears:

Microsoft Visual C++ Runtime Error
This application has requested the runtime to terminate in an usual way.
Please see the application support team for more information.

MuseScore closes, Vista searches for a solution. Closes, crashes.