[pmwiki-users] Problem with login after uprading to Pmwiki2.2.0-beta44

[f.r.salomons]

After upgrading to Pmwiki2.2.0-beta44, I have a problem. Everthing works 
fine for the home wiki in my farm. However, in my two additional wikis, 
I cannot log in. Instead of the usual login screen, I can only see a 
small white band. When I uninstall beta44 by returning to beta43, 
everything works fine again.
Does anybody have a clue as to what might cause this problem?

Frits