$ file Plugins/rwz_sdk.so
Plugins/rwz_sdk.so: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, BuildID[sha1]=5b08dbe73ad361e4748caf05e31224f8b4551957, stripped
Linux: 32-bit plugin in 64-bit package
Moderators: helmut, XnTriq, xnview, Dreamer
Linux: 32-bit plugin in 64-bit package
The rwz_sdk plugin in the 64 bit version is a 32 bit plugin:
Re: Linux: 32-bit plugin in 64-bit package
By the way, it's the same for XnConvert.