Update panel is "core dumping" if "check for development package update" is enabled, follow up of bug 520.
This is a followup of bug #520 (closed).
If you enable "check for development package update" option and look for updates, right before displaying them or telling the user there is nothing to do, pamac-manager makes a core dump.
Here is what I get in a command line:
fred@fredo-arch-mate ~ % pamac-manager&  21523 fred@fredo-arch-mate ~ % /usr/share/app-info/icons/archlinux-arch-testing/64x64/hplip_hp_logo.png: Failed to open file “/usr/share/app-info/icons/archlinux-arch-testing/64x64/hplip_hp_logo.png”: No such file or directory  + 21523 segmentation fault (core dumped) pamac-manager
Warning message appears every single time.
Really weird, but at least, there is no more split development packages listed :)