Error after upgrading from V4.4 to V5.0

Have been working with LR 4 to the fullest satisfaction.
The announced for LR 5 innovations have me, despite the steep price,
make persuaded to upgrade.
With the exception of the module "slideshow" everything works perfectly as before.
A slide show can submit / edit but not play.
There comes a black full screen and then goes only a program abort
about Tastmanager.
Adobe support means after long back and forth about this:
There are about this problem already several inquiries.
Adobe suggests LR uninstall / reinstall.
If the error will occur again asked for a report.
Incidentally, it is hoped the support that this problem the next time
provided an update is resolved.
A brilliant performance for this price I do not think that.