I agree Dynio but in this case its a plugin so its only the dll i have to play with ...The problem is that once patched although the dll runs and i see main window it doesnt go on to show the 3d image which it should do ..i even patched somewhere outwith the main code just to test and it picks up on that too...on themakers website they do say that in certain instances the program has a bug where it displays a blank 3d worktop....this sounds similar to what happens when i patch it so maybe thats why .still thinks its crc checking though ...no probs as i have now left that project anyway
paul333