Category Archives: Solutions

Tips, fixes, walkarounds.

macOS High Sierra: Spotlight search not working — “Database mapping failed” error spammed to the system log

Solution can be found here (read the post that starts from “I’ve solved this…” by Design Complex).

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macOS High Sierra doesn’t start after updating (stuck on Apple logo) — “failed to unwrap volume key” error

The first thing you want to do when your Mac system doesn’t start is to start up into the verbose mode to see if there any error messages. Don’t try to fix the problem before diagnosing!

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Windows Server 2019: RD Session Host — ChangeMode “Invalid operation” exception

If you’re changing the client access licensing mode of your RD Session Host using the PowerShell $obj.ChangeMode(…) command and it fails with an error saying “Exception … Invalid operation”…

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“Install %OS%.app does not appear to be a valid OS installer application” (createinstallmedia error)

If you’re trying to create a bootable installer for an older macOS version (like El Capitan) with createinstallmedia, and it fails with a “does not appear to be a valid OS installer” error, quite possible the actual problem is that … Continue reading

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“MagickWand shared library not found” on uwsgi

If you’re getting this error while deploying a Python app on uwsgi: MagickWand shared library not found. You probably had not installed ImageMagick library. Try to install: apt-get install libmagickwand-dev It may not be what it seems: Wand’s load_library() function … Continue reading

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Kerio Connect server connection errors after upgrading to version 9.2.6

Kerio Connect 9.2.6 introduced a limit for a number of simultaneous connections from a single IP address, which is — by default — set to 100 per protocol. If more than a hundred of users start using Kerio Connect from … Continue reading

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Where does the AppStore version of DaVinci Resolve Studio 12 store its projects?

Make sure to make regular backups of this folder:

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Windows not detecting unallocated space after extending virtual disk

You’ve extended a virtual disk in Vmware or Proxmox for a Windows virtual machine, but the disk appears the same size in Disk Management?

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XQuartz.pkg stalls at “verifying” in El Capitan

I don’t know why OS X El Capitan sometimes fails to verify XQuartz 2.7.9 package (the process just gets stuck despite “Allow apps downloaded from anywhere” on “Enabled”). What I know, however, is that you can still install it via Terminal as easy … Continue reading

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Resuming link between Apogee Duet and keyboard volume controls

Oftentimes when I wake up my MBP from sleep mode or reconnect the Thunderbolt hub, Apogee Duet stops responding to keyboard sound volume controls. When it happens, I can still change Duet’s volume from Maestro or Audio MIDI Setup.app, just not using the keyboard … Continue reading

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