Fails to open a mos6502 image

[William-Purvis]

I've just discovered panopticon and installed on Linux Mint following the guide in README.md.
Typing: crate run -p panopticon-qt --release, as suggested says:
error: package panopticon-qt is not a member of the workspace
however typing: crate run -p panopticon --release
does bring up a window which says 0.16.0, Please open a program.

Using the file selector to find my MOS6502 image file types an error message in the command window saying:
ERROR:panopticon_glue::glue: open_program(): model.img is neither a saved session nor a recognized executable type

Did a bit of digging through the code and found a match statement in qt/singleton.rs which selects
on AVR, Ia32 and AMD64, but no MOS6502!
Tried adding mos6502 to the top Cargo.toml file, and rebuilding, but still nothing doing.
Any help/guidance/advice welcomed!

Bill