I'm using EiffelStudio 6.1.7.1179, older than the one you have. It's the released edition. I've attached a screen grab from the exception submit dialog. I've done this because it reads like we are not using the same UI. It appears that you are using the old submit dialog, which I can confirm via the latest stack trace using EB_EXCEPTION_SUBMIT_DIALOG instead of the new ES_EXCEPTION_SUBMIT_DIALOG (new ES_ prefix over the old EB_). This is not consistent with your initial report with the trace stack113.txt attached, which used the correct ES_EXCEPTION_SUBMIT_DIALOG.

I guess there is version mismatch between your WinXP and Solaris installations.