When the Explorer window gets into a state that the Comments windown will not reveal to only solution to the delete the file "Explorer.json."

Here is a quick snippet of code that can be used to reset the Explorer Window:

C_TEXT($Path_T) $Path_T:=Get 4D folder(Active 4D Folder)+"4D Window Bounds v"+Substring(Application version;1;2)+Folder separator+"development"+Folder separator+"[projectForm]"+Folder separator+"Explorer.json" If (Test path name($Path_T)=Is a document)     DELETE DOCUMENT($Path_T) End if

This works by deleting the Window Bounds file specific to the 4D Explorer window.