I am trying to develop a model which uses signed modal response spectra seismic analysis. When I enter the first of four directional load cases, the model appears to run fine. When I enter the second of four directional load cases, I get the following error:
*ERROR* STAR FILE MGR. ERROR NO. 6 DETECTED BY LIBREAD
THIS ERROR MAY HAVE BEEN CAUSED BY INPUT DATA ERRORS OR PROGRAM LOGIC ERRORS.
*** ERRORS IN SOLVER ***
I am trying to do an IBC 2012 analysis. What might be causing the error?
