Just installed TB on Win 10 machine. Copied over profile from Win7 machine. All looks in order. When I reply (or write) to a message the message window opens. The to: field is not populated. When I click in the window the cursor starts spinning and I get the (Not Responding) message in the window header. Thunderbird hangs. No crash report is created? This is only happening on my company gmail account, other accounts are working correctly.