[Chimera-users] Error running chimera

Hi there, I have been able to use Chimera many times in the past, but now when I try to run it, a dialog box pops up and I get get any further. In fact, it seems to be spawned infinitely and I cannot close it. Here is the message: "Class DBPuppet.AC_KEY_ERROR'> Can't open web info file for reading". I don't know what has changed on my system to cause this, it was working fine a week ago. Does anyone have any ideas? I am using the most stable production version right now. My operating system is Windows Vista. Thanks in advance, Christian