Unable to create/copy ST block in Proficy Machine Edition

Hi,

I have a PLC project backup from site which was created in PME 5.5 and now I am opening it in PME 8.6 but unable to create ST block since it shows LD and IL block options only also there is * mark in front of Hardware Config when opened project(without doing any changes to HWC)

Please see attached snapshot. can someone guide me to resolve this issue?

Your configuration shows that the target is a 90-30 PLC. The 90-30 doesn't support structured text.