[otrs] TimeAccounting 1.4.92 - not able to insert mandatory daily hour

Hi there, I've tryed out the new version because I was interested in "bulk" update on hour, but, since its installation, I'm not able to exit from the mandatory input windows. Is there a way to reinstall 1.4.91 ? This because of the following message [root@xxxxx004 ~]# /opt/otrs/bin/otrs.PackageManager.pl -a install -p TimeAccounting-1.4.91.opm ERROR: OTRS-otrs.PackageManager.pl-10 Perl: 5.10.0 OS: linux Time: Wed Feb 9 09:03:49 2011 Message: Can't upgrade, installed package '1.4.92' is newer as '1.4.91'! Thank you in advance MV