This is a problem I had with the ORIGINAL example_1st.qst back in 2000 and also with a test quest I made to test another issue:

Apparently the tiles don't read the same as it seems to read the new ZC tileset rather than the one included with the file from 1.84. The 184 Test Quest I made works fine in 1.84.

To try to remedy the problem I ripped the tiles from 1.84, saved them there, and tried to import them into the test quest in 2.53 to see if that would fix the problem. 2.53 didn't read the 1.84 tile format.

For some reason New Quest and Demo kept their tilesets in 1.84 but the new quest didn't. Weird.

The test quest fails on all versions of 2.50.

-James