AutoPIPE error 1304731 indicates that there are improper combinations of the modal solutions for seismic anchor motions and seismic response spectra. The "fix" to the error report is a warning to the end-user; however, there is no work around.
Other FEA programs provide intermediate outputs for modal solutions, which would allow the end user to perform their own diagnostic review for combinations.
Hi Robert
We also produce a complete Modal report detailing the directional contributions for all modes at each node for displacement, force and acceleration. I think this is what you need. The report is quite large and can be found in the print options after asking for it in the Analysis Set. You might want to omit the other reports and you will need to print it to PDF to read it (recommend in landscape). It is only going to consider the dynamic load results one by one.
As I suspect this is what you need I will make this Idea as Already Exists, unless you let me know if it doesn't satisfy.