I'm running cqrlog 2.5.2-1~hirsute (/var/lib/apt/lists/ppa.launchpad.net_ok2cqr_ppa_ubuntu_dists_hirsute_main_binary-arm64_Packages) on a Raspberry Pi 400 under Ubuntu 21.04 with the following kernel:
Linux ubuntu 5.11.0-1009-raspi #10-Ubuntu SMP PREEMPT Fri May 14 14:49:24 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux
I'm having the same problem as described here: https://www.cqrlog.com/node/3086#comment-9368
"Import failed! TRegExpr exec: empty input string"
Based on the referenced thread, I thought a work-around had been implemented.
The ADIF files I was attempting to import were subsets of QSOs exported from cqrlog earlier today.
Thanks & 73,