Staad.Pro works in the trial period, and it works in Standard mode (not USL).When trying to make a manual checkout for Staad.Pro it gives the error:"STAAD.Pro (5) - No checkouts remaining for this product".
The checkout restrictions for were set as Staad.PRO was allowed for checkouts, but Universal Structural License (USL) - not.
Either upgrade SELECTserver to the latest release, or add USL to the licenses allowed for checkout as SS 8.11.7.35 also needs to check out USL when a client only asks for Staad.Pro checkout.