Hello
I´ve the same issue with an IDES 7.4 ERP EHP 7. I make this to solve:
At this stage you can reset your spam queue...
Go to Tx SE37
select program name : OCS_RESET_QUEUE
test/execute (f8)
give the value for import parameters
IV_tool : SPAM
IV_FORCE : X
Execute (f8)
there after the spam queue will get reset and then you can do it again.
After that I have applied this note to reimport the SAPM
684564 - Re-importing a SPAM/SAINT update
you can get more info into the following link
http://www.stechies.com/how-to-delete-spam-error-queue-and-package/
Hope help,
José Maciel
SAP BASIS at BaseIT