Hi Mendi,
With the new RAW module you can open Fuji X-T2 raw files without problems. However, unfortunately the current Debayer module cannot interpolate X-Trans frames.
The good news now: I have a working Demosaic module, which will replace the current Debayer module in the next version of PixInsight. Demosaic implements the same X-Trans interpolation algorithm as libraw does, but in a fully parallelized version. This means that X-Trans frames can now be used just as Bayer frames throughout the whole preprocessing chain, from ImageCalibration to DrizzleIntegration. If you and other X-Trans users are interested, I can make a prerelease of the new Demosaic module, along with a modified version of BatchPreprocessing to support X-Trans demosaicing, through the update-devel repository.