hi all thanks for taking the time to review and answer.
as the title i get the following erroe when i try to import a raster to overlay. it will import the file if i change it to a .BMP?? but not a jpeg, tif ect.
the problem is when i import as BMP it takes a long time have managed to import 1 raster in sucessfully as BMP nothing showed up... all other times coumputer usally gives up - workstation is fairly good spec to..
i left one to run overnigt when i came in the next morning it said there was 24hours remaning i checked the TileCache in the project folder and it had exceeded 3GB this cant be right??