Use Imagetool to add mipmaps

Hello,

I'm trying to add mipmaps to all PMDG liveries. They are all stock liveries straight from OPS Center.

Doing simple batch process returns an error, "Could not read image bitmap data".

Any ideas why, and can I make it work somehow? I'd hate doing everything by hand with DXTBMP, which btw. is working.

Thanks

Simon