Raster data Mapserver 4.0 -> 4.2

[Manfred]

Hello

I made an application with mapserver 4.0, with raster data in it (esri
raster produced with ArcGIS 8.x) and everything worked fine (Windows2000,
apache2).

Then I upgraded to mapserver 4.2: now my raster data does not show anymore
in the web-application.

Strange, isn't it? Did something change from 4.0 to 4.2 regarding esri
rasters visualization??

Thanks for help! manfred