Wrong columns in $TABLE output

Dear nmusers, I'm running into a problem where NONMEM is giving me the wrong columns in the table output for a particular model. E.g. if I request CWRESI as an item in $TABLE, it will return CPREDI. CWRES becomes CPRED, NPDE becomes EIPRED, and so on. It's a fairly large BAYES model, with 27 THETAs, 32 OMEGAs (including IOV on several parameters), plus priors. If I simplify the model slightly by removing a few parameters NONMEM will give me the correct table columns. What might be causing this issue? Many thanks in advance, Tim