NW65SP7 with GW702HP installation with Backup Exec v9.1 rev 1156

Have been backing up the GroupWise system quite successfully using GWTSA for ages
Can't think why things have to change but application of NW65 SP6 & SP7 stops GWTSA from working
SMDR problems I think

Anyway followed the recommended path and now using TSAFSGW instead
(Obviously with TSAFS Enabled)
Backing up the GroupWise system using TSAFSGW results in the following error message:

##ERR##Novell SMS errors were encountered.
##ERR##Begin Novell SMS errors:
##ERR##TSAFSGW.NLM(TSAFS.NLM 6.52.8 334) An internal TSA error has occurred.
##ERR##See error log for details.
##ERR##End Novell SMS errors.

So I rather doubt that the GroupWise system has been successfully backed up
BTW there is no error log in SYS:SYSTEM\TSA
Anyone know where to find the error log to which the above refers ?

Anyone know how to put this right or, better still, how to revert to the tried and tested GWTSA solution which does work ?
Is there a version of SMDR.NLM I can copy back to recover GWTSA functionality ?
Thanks
Splash