Allocation error in statistics

[Jerry3]

I have problem. Since 27th april statistics for one of my sites allways fail :-( In the event log I read:

bad allocation
at Execute C:\PROGRA~2\PARALL~1\Plesk\ADDITI~1\Perl\bin\perl.exe "C:\Program Files (x86)\Parallels\Plesk\Additional\AWStats\wwwroot\cgi-bin\awstats.pl" -showsteps -showcorrupted -showdropped -config=xxx.net -update(execExtUtil line 222)
at Unable to peocess web statistics for domainxxx.net(statistics::runWebLogAnalyser line 3118)
Execute file name: C:\Program Files (x86)\Parallels\Plesk\admin\bin\statistics.exe

Any idea of how can I make this work...I have used some URLRewrite in the last month, but this surely can not be a reason?

Yours

Jerry