I managed to test this myself:

TO ALL WITH PROBLEMS DURING THE INSTALLATION

Install "PyQt4 Full install" from the normal maemo-Extras (keep Extra-Devel disabled during the installation) and install DreamRemote after that the normal way from Extra-Devel.

Then it should work without problems!

With the official release of PR1.2 this will get (hopefully) unnecessary.
You can deinstall "DreamRemote" and "PyQt4 Full install" before the update to PR1.2 to save space on root (as far as I know is PyQt4 not fully optified) and install DreamRemote after PR1.2 the normal way again. (the settings of DreamRemote survive)