I uninstalled PTP 1.8 and updated Adobe Flash. Next I cleaned registry and I installed again PTP but this time 32-bit version (I have Win 7 64-bit OS). I run PTP and this time it worked. I created very simple project with one pano and OSM map. It is uploaded to: http://iga.vot.pl/virtualtour_blok.swf
I closed PTP. When I opened the project again to start improving it the problem occured again: Loading map stops at 50% like on the image below and program is not responding. It seems that progress of loading of the map stucks at 50% due to some display issues.
Any help will be appreciated.