Testing it this morning has lead to different problems though now none about the file format.

The project is uploading to ftp.coniserver.net and the main problems I'm having now weren't present in 8.03.3.

Pressing shift and 1 should floodfill the tiles on the level but now I'm getting an invalid pointer error.
Drawing with the mouse over the tiles should create walls and automatically fix the edges, although no error is prompted the wall mesh is no longer being manipulated.

Any insight into these problems would be appreciated.

Thanks again