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I bought a "Chilkat 1-Developer Email License" in 2015 and have been using it successfully. This code works with no problems:

success = mailman.UnlockComponent("MyUnlockCode")

Some of the emails I have been trying to decode are now coming as *.eml files so I tried to follow the example here: https://www.example-code.com/vbnet/mime_extractFiles.asp

However, the following code:

Dim mime As New Chilkat.Mime
Dim success As Boolean
success = mime.UnlockComponent("Anything for 30-day trial.")

returns False for Success, regardless of whether I use my unlock code or just leave as default from the example. It recognises the MIME class with no problem.

Do I need to buy another different component to activate MIME? I can't see it in the list of products here: https://www.chilkatsoft.com/products.asp

Do I need to buy a bundle? If so, can I upgrade me existing licence or is it too old?


asked Aug 03 '17 at 01:29

Dave9's gravatar image


edited Aug 03 '17 at 01:30

According to the class reference at https://www.chilkatsoft.com/refdoc/cpp.asp the Mime class is part of the bundle. The lastErrorText should say why unlocking fails, see http://cknotes.com/unlockcomponent-returns-false0/

Contact Chilkat at support@chilkatsoft.com to discuss pricing to upgrade to the Bundle. Include your current unlock-code(s) in your email.


answered Aug 03 '17 at 02:31

Gert's gravatar image

Gert ♦

Ah, thanks very much - I will speak to Chilkatsoft to see how to upgrade if possible.

Also, I found while doing the testing you recommended that if I put in other text in the UnlockComponent method it did actually allow me a 30 day trial. The lastErrorText did give me the hint - said my code was good but for wrong product!


answered Aug 03 '17 at 09:10

Dave9's gravatar image


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Asked: Aug 03 '17 at 01:29

Seen: 960 times

Last updated: Aug 03 '17 at 09:10

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