jEdit full plugin installation - getting through

I got 3 problems from a full plugin installation using jEdit version 4.3.1:

#1 - "Cannot run global"

If a "A Cannot run global" message keeps poping up after installing all plugins, then uninstall the 'GlobalPlugin'.
To remove it, use the Plugin Manager and restart jEdit.

#2 - Error message "Class or variable not found: p4plugin.P4FileInfo"

Sourced file: inline evaluation of: 'new p4plugin.P4FileInfo(); ...
Class or variable not found: p4plugin.P4FileInfo ...

To solve this, I tried to find p4plugin and remove it, but the Plugin Manager didn't show the respective plugin as p4Plugin.
After other attempts, the solution was the manual deletion of the respective jar (INSTALL_DIR/jEdit/jars/P4Plugin-0.3.1.jar), because the Plugin Manager couldn't help.

#3 - Some plugins failed

Some plugins didn't install successfully. Just 4 of them.
So, I removed them using the "Plugin Manager".

NOTE:
Check the status of the plugins after any installation.
If someone shows any kind of error status, remove it or try to install again.

These procedures permitted me to perform a successful (almost) full plugin installation at one step, although it's not advisable.