PR# 15173 EiffelStudio crash when selecting library

EiffelStudio 6.3 GPL crashes when selecting the 'Add a library' button from the 'Clusters' view.

1. Launch EiffelStudio 6.3 GPL. Remove any pre-selected projects in the start-up dialog, then select 'Basic project (no graphics library included)' from the 'Create project' list box. Click 'Create'.
2. Fill in the 'Choose your project name and directory' dialog as desired. In my case, I had already created a directory with a single Eiffel class file (.e extension) in a separate directory by itself. This class was a copy of an existing class, renamed for the test system I wanted to create. (Both the name of the class in the text and the name of the .e file match.) My one-class system uses classes from the EiffelWeb library. Select 'Compile project' and click 'OK'.
3. In the 'Target Selection' dialog, select the first entry (not .NET).
4. System compiles and produces errors as expected.
5. I need to add a library in the 'Clusters' view to correct the errors. (In my case, I need to add EiffelWeb.) Expand the 'Libraries' node--desired node not present, as expected. Click on the 'Add a library' button at the top right of the Clusters view.
6. An error window appears, with the following text: "Internal EiffelStudio Exception. Check that you have enough disk space to compile the project. [I do.] If this happens even after relauching EiffelStudio [it does] delete the project's EIFGEN folder and perform a clean recompilation. [I did; I get the same result.]"

I've attached the stack trace generated by the error (as an attachment).

As of rev#76308, this problem has been fixed. Please see the next interm release after build 6.4.7.6308.

Attachments for problem report #15173