wave propagation error

[alinago91]

Hi I am getting this mesage over and over:

Starting Strata Calculation
1 Trial(s) (1 Site(s) and 1 Motion(s) )
[1 of 1] Generating site and soil properties
[1 of 1] Computing site response for motion: Desktop\RSN212_LIVERMOR_A-DVD156.AT2
Wave propagation error -- removing site.
Canceled by the user.

I did not cancel it and I assume somethig is wrong with the file. But it is AT2 formatted and i cant understand what could go wrong.

[arkottke]

This happens when computed strains are NaNs. Change the logging level to "High" in the Output tab, and re-compute. This should help you identify the problematic input.