I have the same problem on debian buster
ERROR: COPY ~EET/TEMP/PATCH/SPL/ADD_SPELL/SPCL101.SPL~ ~EET/temp/patch/spl/SPCL101.SPL~ FAILED: cannot open target
Stopping installation because of error.
Stopping installation because of error.
Stopping installation because of error.
BLAD podczas instalacji [EET core - import zasobow], powrot do poprzedniego stanu
Will uninstall 236 files for [./eet/./eet.tp2] component 0.
Uninstalled 236 files for [./eet/./eet.tp2] component 0.
[./chitin.key] 187 BIFFs, 62160 resources
[./chitin.key] 187 BIFFs, 62160 resources
[./chitin.key] 187 BIFFs, 62160 res