My wife's computer has problems printing from Thunderbird. Trying to print produces a message that says, "Your printer has experienced an unexpected configuration problem. 0x800706ba". I thought the problem was related to her old printer, a Brother black-and-white laser printer, so I bought a new Epson ET-2800 series color printer, but the same message appears. I have found a workaround. If I go to Settings in Thunderbird, clear the cache, and restart the computer, it will print on the next try, but later the same error message will appear on attempts to print. I have selected the "Clear cache at shutdown" option in Settings, but that doesn't help. The cache still has to be cleared manually. I can print a test page with no problem, and I can print from other applications, so I assume that the difficulty is related to something in Thunderbird. I might add that I use Thunderbird on my computer. Fortunately that problem has not arisen on it. Suggestions for solving this problem will be appreciated. Eddie Blick