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I had the same problem.
I copied the one line of code provided earlier in the thread, i.e. <{$xoops_module_header}>
Of course you must save the file.
Then you must go to PREFERENCES--> SYSTEM--> GENERAL SETTINGS and check "yes" where it says "Update module template .html files from themes/your theme/templates directory?"
Now return to your home page and log out. It should work. Log back in, go back to GENERAL SETTINGS, and change Update modeule template etc. back to "no."
Rock on.