Hi, Thanks for your reply.
I have changed all LOAD COMB to REPEAT LOAD and have also added SET NL command (as that error appeared in analysis of load case 120, if not used). Now, I have few question on it:
1. Total load cases in my model (including those converted to REPEAT LOAD from LOAD COMB) are 100 and hence I have SET NL 100. Is that right?
2. In my previous model, PERFORM ANALYSIS & CHANGE commands were used on for TWO seismic load cases. Now that all load combinations are converted into load cases (REPEAT LOAD type), do I need to set PERFORM ANALYSIS & CHANGE commands for all load cases (REPEAT LOAD type) including seismic loads?
3. As mentioned here: 
Its mentioned that "...........It's important for models with any tension-only braces that the lateral loads be applied in all directions so that the load combos can use positive terms exclusively.".
Does this mean I can not use syntax with negative sign (for exa: load 127 in attached model, see below syntax) for REPEAT LOADS that I converted from LOAD COMB?
LOAD 127 0.99 DL -1.1 EX - 0.33 EY
REPEAT LOAD
1 0.99 11 -1.1 12 -0.33
4. Lastly, I am left with this warning...
**WARNING-Tension/Compression did not converge after 10 iterations, Case= 119
** If results are not satisfactory then enter a
** SET ITERLIM i command (i>10) before loads to get more iterations.
However, for me results seem okay. Should I bother about this warning?
Thanks again!!!
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