Error when using custom WAD in JDOOM

[the iron hitman]

Hi. Ok, to the point:-

When i load up JDOOM with a custom WAD (jdoom format) it comes up with this error (note it only happens with this wad for some reason :S)

P_Init: Init Playloop state.
HU_Init: Setting up heads up display.
ST_Init: Init status bar.
M_Init: Init miscellaneous info.
SetupLevel: map01
R_TextureNumForName: Z not found!

i think its a texture problem

[Steeveeo]

Its looking for a non-existant texture "Z"

either add a dummy or search in the editor for the linedef using the texture "Z"

[the iron hitman]

But the thing is steevoo, i cant find that linedef, and theres over 3000!

[CodeImp]

In Doom Builder, press F3, choose search type "Linedef texture", in the 'find what' field type "Z" and click Find. It will show you a list of results and you can click on the results in the list to see where the line in the map is.

[the iron hitman]

weird, says 0 results found :S