Path Problem when a new Level loads in Editor / Tilemaps

When i load iTorque and work on my Level all is fine.
when i load another level then all tilemaps are empty.

The console in "Torque\iTorque 2D_1_5\tgb" says:

t2dTileMap::loadTileLayer() - Could not Open File 'J:/DragonTaleB/games/IOS/MyProjects/Birdies Run/projectFiles/data/tilemaps/data/tilemaps/e3l1Ground.lyr' for Tile-Layer Load.
Executed J:/DragonTaleB/games/IOS/MyProjects/Birdies Run/projectFiles/data/levels/e3l1.t2d. Took 0 ms
Executed J:/DragonTaleB/games/IOS/MyProjects/Birdies Run/projectFiles/scripts/system/prefs.cs. Took 0 ms
Set::getObject index out of range.
Set::getObject index out of range.
...
@@@ Shutdown res: 1279 766 16
@@@ Final res: 1279 786 16

can anybody point to it?
I think there is a double / somewhere, but i am not sure.