01-06-2018, 02:57 PM
Looking at my very basic Kubunto 16.04 virtual machine + stock Gimp 2.8.16 + help installed from the repo.
With local help enabled in Gimp I get a
"Calling error for procedure plug-in-web-browser No application is registered as handling this file"
If I enable on-line help I get a message ending
"Perhaps you are missing GIO backends and need to install GVFS?"
Installing gvfs and gvfs-backends (pulls in a raft of dependencies) does get the on-line help working. (I recall that this never worked in my PClinuxOS instalation)
Strangely also gets the local copy working as well. Maybe that will fix the OP's problem
Still prefer the PDF version.
With local help enabled in Gimp I get a
"Calling error for procedure plug-in-web-browser No application is registered as handling this file"
If I enable on-line help I get a message ending
"Perhaps you are missing GIO backends and need to install GVFS?"
Installing gvfs and gvfs-backends (pulls in a raft of dependencies) does get the on-line help working. (I recall that this never worked in my PClinuxOS instalation)
Strangely also gets the local copy working as well. Maybe that will fix the OP's problem
Still prefer the PDF version.