Error: Exception error: INST.DOREAD When starting Concrete, you get the error: Solution Reset the ConCrete preferences. Was this article helpful? Yes No Related Articles Exception error: DOCHANGINGINVOER.1 Cannot focus a disabled or invisible window Beam poured in two stages ConCrete opens and closes immediately Restoring the HCS library after resetting the ConCrete preferences Error: Access violation at address 004036F7 in module ‘ConCrete.exe’. Read of address 00000000. Sum of reactions does not equal total loading