When try to update a ofbiz-framework working copy after having used pullAllPluginsSource, you get an error message "Skipped obstructing working copy".
This is because we have already a plugins folder in the ofbiz-framework/trunk branch and when we use pullAllPluginsSource we replace it by a new one (plugins folder) and the main .svn gets confused (in root)
In other words, because of the plugins/README.txt file when you create a working copy from the ofbiz-framework/trunk branch you generate a .svn in root folder where there is a "knowledge" of this file and the plugins directory.
So, we can't delete the whole plugins directory and replace it by another different plugins directory with the plugins sub-folders inside.
Morevoer you can't make a chekout (which pullAllPluginsSource currently does) in a non empty folder.
And If you temporarily move the plugins/README.txt file to get an empty directory you get this error message
> svn-checkout failed for https://svn.apache.org/repos/asf/ofbiz/ofbiz-plugins/trunk
svn: E155000: 'C:\projectsASF\ofbiz-framework\plugins' is already a working copy for a different URL; perform update to complete it.