Hello,
I have a X32 card.
I had the same problem of creation of directories, after several used with no problem and with a hard disk.
The message “ERROR! Recording error! Directory creation failed!” appeared on Uremote and the recording was impossible
Having a computer, I moved files in the directory of recording, I deleted the file(case)recording directory and I reconnected the whole. The card X32 started again working without the error message.