Did you reinstalled after downloading the latest version ? Re-download it and reinstall it.

http://openpli8xstar.japhar.net/OpenPLi8xstar/openpli-enigma2-8xstar-dm820.rootfs.tar.xz

and installed from the feeds the plugin ?

This one is no more available in the feeds...
Code:
http://openpli8xstar.japhar.net/feeds/openpli-8xstar/mips32el/enigma2-plugin-extensions-epgimport_1.0+git255+f7ed2f6-r0_mips32el.ipk


Check this one instead,
Code:
http://openpli8xstar.japhar.net/feeds/openpli-8xstar/mips32el/enigma2-plugin-systemplugins-crossepg_0.9.0+gitr551+e9684c1-r0_mips32el.ipk


Admin

Code:
PC: 762ccb80
    00000000 00000001 7571c000 00000000
    75b20000 00000000 007e9000 75f05000
    75f05000 7fa8d0fc 00000000 00001e00
    00000000 00000000 cf622600 006e0000
    00aaaf28 00000438 00000020 00000780
    006e0000 00aaaf40 00000780 7682f6ec
    00000000 75f04ee0 00000000 00000000
    763be4f0 7fa8d090 00000000 00526658
Backtrace:
/usr/bin/enigma2(_Z17handleFatalSignaliP9siginfo_tPv) [0x46B1A8]
/lib/libc.so.6(memset) [0x762CCB80]
/usr/bin/enigma2(_ZN7fbClass7SetModeEiii) [0x526658]
/usr/bin/enigma2(_ZN5gFBDC13setResolutionEiii) [0x54520C]
/usr/bin/enigma2(n/a) [0x562A44]
/usr/lib/libpython3.9.so.1.0(n/a) [0x7682F7C8]
-------FATAL SIGNAL 11
_________________________