After trying to async submit a form with a file upload field for a few hours I trolled around the message board and JIRA and ran across this:
http://issues.apache.org/jira/browse/TAPESTRY-1348 Is trying to async submit a form with a file upload field a DEAD END? We tried to add the IFrame transport mechanism . . . however this did not trigger the request. Looking at the code it appears that the IFrame transport mechanism does not support async submissions etc. The tacos bug system has a related bug that mentions other changes that may be necessary to fix this: http://tacoscomponents.jot.com/BugReporter/Bug62 Has anyone been able to successfully async submit a form with a file upload field? Carlos