STAAD UBC Loads with Design Groups and Select Optimize

I am trying to select optimize but keep coming up with the same error "Only 1 UBC Case can be solved in a tension/compression analysis".  I have perform analysis change after each seismic load and it ran fine before I tried to optimize the members.  Does anyone have any suggestions??

The codes I tried after defining parameters were:

Perform Analysis

Fixed Group

Group...

Select Optimized (also tried "SELECT ALL")

Perform Analysis

Select Optimized (also tried "SELECT ALL")

Perform Analysis

Code Check All

Finish

I also tried:

Select All

Group Memb

Perform Analysis

Check Code

(and repeated that for 2 cycles)

Finish

I am fairly new at using STAAD and would be greatful for any help on this matter.  Thank you in advance!!

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