Hi,
Thanks for that error message, this is now fixed in svn trunk.
This error would not have happened in production environments, so no-one is experiencing this error on production sites. The error occurs while running in debug mode in VS because it is a debug.assert throwing the exception. The problem was that the parameter array for that stored proceudre was declared in code as having a size of 5 (ie 5 parameters) but the actual procedure had only 1 parameter so the debug assert flagged an error but in actual production use the array being larger than needed causes no error and no problems.
These debug asserts are designed to help find places where the code is incorrect so its good to find and fix things like this so that the code is correct. This was most likely a copy paste error where the code was copied and modified from another method that had more params but the modification to set the correct array size was missed.
Thanks,
Joe