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On Jun 7 email insisted on seeting up new account and contacts were blank. Response was to tell it where profile was. Instructions did not work.

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The answer posted on the Forum did not work. I found the profiles. I could not get the profile manager to fun in a Dos window or from the command prompt. Any of the other commands did no run. Most of the instructions I did not understand. Robert >Mozilla Support > > >On Jun 07/17, on trying to open, Thunderbird offered to set up a new >email account. I already have an account and do not want another >one. I can't proceed. > > > >[] > >Airmail Jun 11, 2017, 12:43:32 PM

The answer posted on the Forum did not work. I found the profiles. I could not get the profile manager to fun in a Dos window or from the command prompt. Any of the other commands did no run. Most of the instructions I did not understand. Robert >Mozilla Support > > >On Jun 07/17, on trying to open, Thunderbird offered to set up a new >email account. I already have an account and do not want another >one. I can't proceed. > > > >[] > >Airmail Jun 11, 2017, 12:43:32 PM

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CCleaner broke your Thunderbird profile. Here is a discussion on their forum. Check with them for a solution. https://forum.piriform.com/index.php?showtopic=48428#entry284145