Getting these "internal error" messages on yushan, apparently only while previewing. It's a project with multiple dependencies, including some pe-git: URIs.
I've had a problem that may be related, and only seems to happen on yushan. A file is made successfully in a preview session, but fails when that same preview session is saved. The problem is solved by manually remaking an intermediate target. Thus, it seems like there was some problem with merging the preview directory. The project where it happened has prerequisite read-only projects. Sorry I haven't had a chance to stop long enough to document it clearly yet.
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I've had a problem that may be related, and only seems to happen on yushan. A file is made successfully in a preview session, but fails when that same preview session is saved. The problem is solved by manually remaking an intermediate target. Thus, it seems like there was some problem with merging the preview directory. The project where it happened has prerequisite read-only projects. Sorry I haven't had a chance to stop long enough to document it clearly yet.
I can't reproduce the internal error problem now. I'll have to see if it recurs.
I solved a preview-merge bug that probably fixes the merge issue mentioned here. Not clear whether it impacts the internal error issue.