Hello,
Please try the file with latest installation of STAAD.foundation Version 5.2. This version has tons of new features and enhancements compared to v4.
Also, in your STAAD.Pro Z axis has set upward, for importing it into STAAD.foundation you should set Y Axis upward.
I have attached zip file containing revised .std file (with Y axis set up). .afs file and some reports generated from STAAD.foundation.
I hope it helps...