Lightroom CC (2015.14) - Import error message "Some import operations were not performed." with error code "93".

Hi all,

I'm getting an import error in Lightroom "Some import operations were not performed." + "Files cannot be opened in Lightroom. (93)" when I try to load some ARW files (Sony raw) in my Lightroom catalog.

Context :

I've extracted the *.ARW RAW files succesfully from my SD card reader through another RAW converter which I've been using successully (in addition to Lightroom) for a long time now.

Note : I can succesfully see these picture previews in this other RAW converter.

I want to import these *.ARW from their current location (F:\2018\2018-08-15\Raw selection\) and add these to my LR catalog.

When I select the folder and click on "Add", I do get the error messages mentioned above.

I've noticed in the Lightroom import window that the (new) pictures which I've selected aren't rendered (no preview/thumbnail) : could these symptoms be associated with the root cause ?

My OS is Win 10/64 bits (up-to-date).

Here's what I've checked/done so far :

- C (Catalog) and F (Raw Pics) drives space & health (-> chkdsk) : Ok.

- Folder/Disk permissions : Ok.

- Lightroom catalog health : Ok (don't get any error message when running backup before exit).

- I've already been able to import sucessfully some RAW files from this camera into my LR catalog (a few weeks ago).

- I've tried to run a different import through selecting "copy to DNG" but got the same result (Ko).

- I've tried to import another Raw file type (NEF) from a different folder into the folder F:\2018\2018-08-15\Raw selection\ and the import did work Ok.

Could this issue be due to my RAW file type support being suddenly broken ?

Many Thanks for your attention and your thoughts,

Best,

Al.