INvalid license & application will close!

I just installed the application just find & attached the community edition license key. but when the program start, it will always
show a message “invalid license & application will close”, and application close immediately.
I can’t do anything .

pls need your help …
Thx inadvance…

Error Log:

[Tue Apr 12 09:37:10 ICT 2011] [message] [Tue Apr 12 09:37:10 ICT 2011]: Start Visual Paradigm for UML Community Edition [VP-UML CE]: 8.1 (sp1_20110408)
[Tue Apr 12 09:40:45 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:40:46 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:45:29 ICT 2011] [message] [Tue Apr 12 09:45:29 ICT 2011]: Start Visual Paradigm for UML Community Edition [VP-UML CE]: 8.1 (sp1_20110408)
[Tue Apr 12 09:47:00 ICT 2011] [message] [Tue Apr 12 09:47:00 ICT 2011]: Start Visual Paradigm for UML Community Edition [VP-UML CE]: 8.1 (sp1_20110408)
[Tue Apr 12 09:47:09 ICT 2011] [message] [Tue Apr 12 09:47:09 ICT 2011]: Start Visual Paradigm for UML Community Edition [VP-UML CE]: 8.1 (sp1_20110408)
[Tue Apr 12 09:47:14 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:47:14 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:54:39 ICT 2011] [message] [Tue Apr 12 09:54:39 ICT 2011]: Start Visual Paradigm for UML Community Edition [VP-UML CE]: 8.1 (sp1_20110408)
[Tue Apr 12 09:55:52 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:55:52 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:56:51 ICT 2011] [message] [Tue Apr 12 09:56:51 ICT 2011]: Start Visual Paradigm for UML Community Edition [VP-UML CE]: 8.1 (sp1_20110408)
[Tue Apr 12 09:57:01 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:57:01 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:59:12 ICT 2011] [message] [Tue Apr 12 09:59:12 ICT 2011]: Start Visual Paradigm for UML Community Edition [VP-UML CE]: 8.1 (sp1_20110408)
[Tue Apr 12 09:59:22 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.
[Tue Apr 12 09:59:22 ICT 2011] [message] [Fatal Error] :1:1: Content is not allowed in prolog.

Can you send us some screenshot of the key manager with show all key and show expired option turned on, plus your license key file to have a look? You can send to support-team@visual-paradigm.com

Best regards,
Rain Wong