Hi Mike,
This looks like known CR 753695, which is fixed in 15.7 SP130 and higher.
Workaround -- switch off 'procedure deferred compilation'. (DEFAULT IS ON)
sp_configure 'procedure deferred compilation', 0
There is a KBA written for the issue, http://service.sap.com/sap/support/notes/1961388
Cheers,
-bret