Sylpheed Claws and Umlauts in User Directory

Please let me know if this is an issue with upstream - as I haven’t seen that problem with SC under Linux before I was guessing it might be a porting problem.

I’ve also filed a bug report today.

Sylpheed Claws quits immediately after starting when I am logged in as the Windows user “Flo Fürstenberger”.
Starts fine when I’m logged in as “flo f”, so spaces aren’t the problem. When I’m logged in as “flüf” the problem occurs again.

WinXP Pro SP2, gpg4win 1.0.6

Is there - as a temporary solution - a way to tell SC to use a different location for its settings files?