Okay i just installed a new msn messenger on my phone version 2.5.30, and i have saved a chat history on to my media card with the old version, but the new version won't load the history. all it says is "loading..."
Might not be backwards compatible with new software version... it's been known to happen... did you try doing a Battery Pull: leave your device on, pull the battery for 20 seconds, put the battery back in and wait for your device to boot up... try that first!!!