Hi,
Good news that I'm not the only one in trouble !
Well, I found a fix few days ago.
Currently, for my Yocto builds (for nxp and other boards) I used to share a same "downloads" DL_DIR to avoid unecessary fetch operations.
I tried to use an empty DL_DIR...and it worked fine.
After investigating, I found out there is something wrecked in the "git2" sub-directory of DL_DIR.
I don't know what exactly.
So if you have a custom DL_DIR with a lot of stuff, try to rename your "git2" subdir as "git2.bak".
Launch bitbake gstreamer1.0...normally it will work.
After that, I merged the older git2.bak with the newest.
I tried to check the differences but I didn't find anything relevant, but honnestly I don't have the time to dive into this issue.
I hope that it will help you to figure out the exact reason of the problem.
Best Regards,
Karim