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Having visited XOOPS after quite some time, I d/l and installed 4.5.9 on Bitnami WEMP stack (Nginx) for Windows. Most of the install went good, but when I selected install the three default modules (private messaging, protector, and the other one) the install broke and would not complete.
Upon restoring script and db backups, re-attempted install but without selecting default modules and the install completed successfully. The three modules were then installed successfully one by one from the administrator back end.
Next I d/l Publisher 1.06 final release. After moving to the modules directory and initiating install process by clicking the green X icon, not only did the install break, but also broke the entire admin back end in an unrecoverable manner so that it was unusable without a third installation.
Just passing along my findings. Since the three default modules installed without issue, I would rule out that the root cause could be the module installer issue, db or script permissions issue, or server issue. Most likely something with the module itself.