We have an issue and we are almost 100% certain this is the cause Adobe ColdFusion 9 Hotfix APSB12-06 Causes Problems with Large Forms » Web Trenches
We have tried to make the changes told to us in this link and restarted ColdFusion services but still have the error. We are on version 9 of ColdFusion. Has anyone else ever had this issue and how did you fix it?
Oh I ran into this issue myself. On your CF admin settings set the Method POST on number of items to like 500 and that will fix it.
What changes did you make? You have to modify the neo-runtume.xml by adding something like:
<var name='postSizeLimit'><number>1000.0</number></var><var name='postParametersLimit'><number>5000.0</number></var>
the numbers depending your requirements.
And make sure ColdFusion isn't running when you edit neo-runtime.xml. Otherwise it will overwrite your changes.
This is probably what was happening to us! Thanks for this☺