Thunderbolt display update 1.2 causes unresponsive display

After running the thunderbolt display update 1.2 my display now displays the very thing the update was designed was supposed to correct - a black unresponsive screen (which I have ironically never suffered fro at all ever - grrrr).
I cannot get the thunderbolt display to come back to life although the mac can see it and thinks it is there and is extending the desktop to it.
Anyone else have this issue or ideas to solve?

..and solved. The secret seemed to be to follow these steps. Have no idea if they are all necessary but it worked for me.
In Display preferences hit gather window to bring the thunderbolt display preferences onto the mac screen
Uncheck Adjust brightness automatically and save
disconnect the display from the mac.
Restart the mac
Power down the display and leave for a few minutes
Power up the display
Reconnect the display to the mac
The screen returned to life. Let's see if it stays that way, I will report if it doesn't.

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    0xffffff814b943c00 : 0xffffff7fa30ad4b0
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  • Thunderbolt display update crash

    Hello,
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    Message was edited by: brhelp_zr
    I am sorry i wrote post with same problem like https://discussions.apple.com/thread/6759865

    ..and solved. The secret seemed to be to follow these steps. Have no idea if they are all necessary but it worked for me.
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