thx a lot for response,
I use WinXP SP2 in a virtual PC and I've not made an uninstall of the old version 0.9.2 which
was my "last good running" version cause of problems found in 0.9.4.
Until now I never made an uninstall before installing the new version but now I believe that it is necessary. I uninstalled my version 0.9.2, deleted db-folder and installed the 0.9.5 and really there are no problems in backup, html_export and even the mediatype in html_output is corrected.
Thx Wolfgang