Linux can't open files not owned by user

[steve@kaarta.com]

I am getting the following message when I try to open a file that I have full read write access to (chmod 777) but do not own.

An error occured while loading 'filename.ply': reading error (no access right?)

If I chown to move owners it opens for that user, but I want two users to both have access plys on Cloudcompare. Is there any reason you would need to own the file versus just have read permission to open it in CC?

Thanks!

[daniel]

Sorry, I can't personally answer to this question as I am a total Linux 'noob'.

We rely on Qt to read the file, so maybe it is worth looking at a related Qt issue? Otherwise we need to ask a Linux guru (like Romain).