Do you have more than 100 form fields in the FORM?, if so you might need to increase the postParameterLimit in ColdFusion admin (defaults to 100). More about that setting here: http://www.petefreitag.com/item/808.cfm
It appears to be one of the case-sensitivity problems.
Page extensions in Coldfusion 10 by default are case-sensitive
so .cfm is not the same as .CFM
This is the bug report with a workaround