When attempting to upload any number of documents, including very small files, seems to succeed- but subsequently redirects to an error page indicating the following:
/_layouts/error.aspx?ErrorText=The%20HTTP%20verb%20POST%20used%20to%20access%20path%20%27%2F%5Fvti%5Fbin%2Fshtml%2Edll%2FSiteCollectionDocuments%2FForms%2FUpload%2Easpx%27%20is%20not%20allowed%2E
The HTTP verb POST used to access path '/_vti_bin/shtml.dll/SiteCollectionDocuments/Forms/Upload.aspx' is not allowed.
Any ideas as to why HTTP POST would be denied for this operation?
Update:
Navigating directly to /_vti_bin/shtml.dll/SiteCollectionDocuments/Forms/Upload.aspx gives:
The XML page cannot be displayed Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later.
An invalid character was found in text content. Error processing resource 'http://sitename/... MZ
Error in event log looks like this:
Critical error has occured but the exception object has already been cleared
Current Url: /_vti_bin/shtml.dll/SiteCollectionDocuments/Forms/Upload.aspx
User Login: xxxxxxx
User is Authenticated: True
Performance Counters
% Processor Time Total: 0
Processor Queue Length: 1
ASP.NET Request Queued Total: 1
.NET CLR Exceptions, # of Exceps Thrown: 55
PATH_INFO: /_vti_bin/shtml.dll/SiteCollectionDocuments/Forms/Upload.aspx
PATH_TRANSLATED: C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\isapi\shtml.dll