Error loading USE or USELSX module

Link:  http://www.extracomm.com/Extracomm/FAQ.NSF/FAQs/81e5de4b6fffae0b482572c3000cbe9d
Apply to:  ExtraFax for Domino All versions

Last Modified Date:  10/25/2016


Problem:
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The following "Error loading USE or USELSX module" message is showing on Domino console. How can I resolve?

12/05/2006 11:52:04 AM ExtraFax: Error in Agent '(IVRExport) | IVRExport' in database 'Extrafax.nsf' signed by 'Domino Developer/Extracomm' calling script library 'PostOffice Agent'. Script library signature is corrupted.
12/05/2006 11:52:04 AM ExtraFax: Agent '(IVRExport) | IVRExport' error: Error loading USE or USELSX module: PostOffice Agent
12/05/2006 11:52:04 AM Extrafax-1037: Device Manager for CHN0 started using spool directory c:\EF23120
12/05/2006 11:52:05 AM ExtraFax: Error in Agent '(IVRExport) | IVRExport' in database 'Extrafax.nsf' signed by 'Domino Developer/Extracomm' calling script library 'PostOffice Agent'. Script library signature is corrupted.
12/05/2006 11:52:05 AM ExtraFax: Agent '(IVRExport) | IVRExport' error: Error loading USE or USELSX module: PostOffice Agent


Solution:
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In case you have got this error, please use the Lotus Domino Administrator client to sign your ExtraFax Post Office database (and template) with the Active Server's ID (or a Notes ID that has "Run unrestricted methods and operations" right).

If the above suggestion can't help, please open the extrafax.nsf (and extrafax.ntf) with Domino Designer, and then recompile all LotusScript (Menu bar -> Tools -> Recompile All LotusScript).