Heavy CPU Usage, no Thunderbird start

I just downloaded Portable Thunderbird
first to synchronize my old PC thunderbird I run PortableThunderbird\Thunderbird\thunderbird.exe
I copy all mail, installed all extensions, patched to RC2, etc etc ...
then I copy all files from AppData\Thunderbird\...\profile directory into
PortableThunderbird\profile
then I am trying to run PortableThunderbird.exe
everything I get is that PortableThunderbird.exe never runs PortableThunderbird\Thunderbird\thunderbird.exe,
PortableThunderbird.exe starts using much CPU (probably as much as it can, like 99%)
interesting thing is when I start second PortableThunderbird.exe (the first one instance is still working and eating much cpu) the second one starts PortableThunderbird\Thunderbird\thunderbird.exe (PortableThunderbird.exe sometimes crash but thunderbird is alywas working fine with that second run)

using WinME ... PortableFF works fine ... where can be the problem ?