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W7-64bit Professional with v2.0.0.1007:
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Registry Compactor (thru boot process) seems to freeze when displaying the W7 message: ''Setup is preparing your system for first use''
After ~25 minutes I dared to power down + reboot. Windows 7-64 bit Professional started ok! with apparently no registry harm done! :)
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I could run Registry Compactor v2.0.0.1007 (thru boot process) in both W7-x86 and XP-SP3, without problems!
EDITED Saturday Feb 19, 2011 at 9 pm
I tried Registry Compactor (thru reboot process) a second time, after a CFMC + Registry Cleaning run, all with the 'Normal policy' followed by a reboot!.
The Registry Compactor now finished without problems! :)
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PS: W7-x86 and XP-SP3 are still ''compacting'' the Register (thru reboot process) without problems! :)