@bill - great that you had this issue and manage to solve it. Sucks that you don't tell us "how" you did it. What was broken, what was the cause and what did you do to actually fix it?
Having the same issue my self but would love to have know what you actually did. Right now I'm back to the same place you are when you first posted the question so effectively I'm going to have to find the solution again.
If you get chance and can remember can you update this question with details of what you did. In the meantime I'll keep looking.
For me the /config/application.config and /config/trees.config file was zero size, happened over the weekend randomly. None of the files in that folder should be zero size. Uploading a version of my dev site fixed it. If you don't have a dev site I suggest you borrow a file from a clean install of Umbraco (make sure its the same version as the site you are running on to avoid any quirks). It might not have everything you need but should get you up and running.
Value cannot be null. Parameter name: source
Monday morning blues!
Friday evening website worked fine, Monday morning we get this problem:
Value cannot be null.
Parameter name: source
When trying to log into tha admin.
I have tried: /umbraco/dialogs/republish.aspx?xml=true
And
deleted and regenerated umbraco.confi
But the problem persists, The site is using Umbraco 4.9
Ideas? Anyone?
Bill
Update:
/umbraco/dialogs/republish.aspx?xml=true doesn't work, it takes me to the login screen but I can't login in due to the
Value cannot be null. Parameter name: source
error, so I can't republish the site :(
OK, had to restore the Umbraco files (not the database).
I have this same problem. What did you restore your files from?
@bill - great that you had this issue and manage to solve it. Sucks that you don't tell us "how" you did it. What was broken, what was the cause and what did you do to actually fix it?
Having the same issue my self but would love to have know what you actually did. Right now I'm back to the same place you are when you first posted the question so effectively I'm going to have to find the solution again.
If you get chance and can remember can you update this question with details of what you did. In the meantime I'll keep looking.
Cheers
Pete
See: http://our.umbraco.org/forum/core/general/50172-unhandled-exception-error-when-trying-to-login
For me the /config/application.config and /config/trees.config file was zero size, happened over the weekend randomly. None of the files in that folder should be zero size. Uploading a version of my dev site fixed it. If you don't have a dev site I suggest you borrow a file from a clean install of Umbraco (make sure its the same version as the site you are running on to avoid any quirks). It might not have everything you need but should get you up and running.
Logged this as a bug in the issue tracker: http://issues.umbraco.org/issue/U4-5126
Pete
Thank you very much
I had the same issue that you described, except application.config wasn't empty - it was filled with bad data:
I fixed it like Peter did by copying the file from our dev site.
Thanks Pete. A few years later and we just had this issue on a client site. That fixed it.
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