Fujifilm X-T1 is on the list of cameras with RAW file format supported by Lightroom, but I fail to import the RAF raw format photos taken by Fujifilm X-T1 to Lightroom 4.4 with the error message "Lightroom can't process the RAW files". Is there a way to fix it?
Fujifilm X-T1 is on the list of cameras with RAW file format supported by Lightroom,
It is but Raw support varies depending on the version of Lightroom. Newer versions have more Camera Raw support than older versions.
The column on the right hand side says "Minimum Lightroom version required" for the Fuji X-T1 is 5.4.
Raw support is never added to older versions of LR retrospectively so Lightroom 4.4 will never be able to read X-T1 Raw files.