1. Open a new folder "Volatile" on the SD card
2. Change the following key, using the registry editor:
from \HKLM\System\Filesys TempPath = \Application Data\Volatile
to \HKLM\System\Filesys TempPath = \Storage Card\Volatile
3. Turn off the pocket pc with the power button for about 30 sec (not soft reset/hard reset).
4. Turn it on again.