After System lost power, Houdini19_5_569 no longer works

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After System lost power, Houdini19_5_569 no longer works right. Despite reinstall
It looks like H19_5_569 has damaged or corrupted ability to parse Py and JSON.
Problem persists despite clean reinstal. Honestly, I don't know what to do.

Below is Console output on startup

"
Error running pythonrc.py:
Traceback (most recent call last):
File "C:/Program Files/Pixar/RenderManForHoudini-25.0/3.9/19.5.569/python3.9libs/pythonrc.py", line 63, in <module>
rfh.prefs.init_prefs()
File "C:\Program Files/Pixar/RenderManForHoudini-25.0/3.9/19.5.569/python3.9libs\rfh\prefs.py", line 345, in init_prefs
read()
File "C:\Program Files/Pixar/RenderManForHoudini-25.0/3.9/19.5.569/python3.9libs\rfh\prefs.py", line 383, in read
prefs_dict = json.loads(s)
File "D:\Program Files\Side Effects Software\Houdini 19.5.569\python39\lib\json\__init__.py", line 346, in loads
return _default_decoder.decode(s)
File "D:\Program Files\Side Effects Software\Houdini 19.5.569\python39\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "D:\Program Files\Side Effects Software\Houdini 19.5.569\python39\lib\json\decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

"
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Joined: Oct. 2018
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Have you tried to delete your Preferences for H19.5 and/or RM ??
Do not forget to "backup" the folders before deleting them...

could've been just while writing to the prefs, or before file cache was flushed the outage stepped in...


HTH!
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I guess that did it. But which .prefs got whacked is a mystery.
Thank you
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