Remco,
The files are in place. The init function in Plugin.php is in line 110 in stead of line 119. that’s the only difference. The weird thing is that the first time I activated the v3 configuration, wordpress crashed. Changed it back, wordpress worked again, then changed it to v3 again… wordpress worked!!, then did a testpayment with a temporarily product. The ideal payment went ok. Next day the site was white with the above mentioned error?? My provider uses windows OS and IIS, maybe related? By the way, I use pronamic ideal version 1.2.4.
Marnix
