I am sorry to hear you are having a file stall during uploading.
We would like information that would help us in correcting this problem:
What browser, and version number are you using? (ex: IE: 10.0.9200.16686)
What operating system are you using? (XP, windows 2007, etc)
Were you trying to upload in the email editor overlay or in MyLibrary?
Do you have any plug-ins or add ons being used in your browser? Did disabling any of them help?
Here is how to disable addons: https://knowledgebase.constantcontact.com/articles/KnowledgeBase/5861-constant-contact-works-in-one-web-browser-and-not-another
Thank you! Ed M Tier 2 Support
... View more