Delphi bug: Exception EAccessViolation in module rtl210.bpl at 00016A9C [SOLVED]

I keep getting this error at Delphi shut down:

Application Error - Exception EAccessViolation in module rtl210.bpl at 00016A9C.
Access violation at address 50066A9C in module 'rtl210.bpl'. Read of address 06152AF8.

Solution 1:

The problem is fixed by restoring this registry key to its original state: [HKEY_CURRENT_USER\Software\Embarcadero\BDS\15.0\Known IDE Packages]

Here is the pristine value for this key:

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\15.0\Known IDE Packages]
"$(BDS)\\bin\\htmide210.bpl"="(Untitled)"
"$(BDS)\\bin\\comptoolbar210.bpl"="Component Toolbar Package"
"$(BDS)\\bin\\mlcc210.bpl"="(Untitled)"
"$(BDS)\\Bin\\tgide210.bpl"="(Untitled)"
"$(BDS)\\Bin\\delphiosx32210.bpl"="Delphi OSX32 Platform"
"$(BDS)\\Bin\\macosxdebugide210.bpl"="MacOS"
"$(BDS)\\Bin\\delphiwin64210.bpl"="Delphi Win64 Platform"
"$(BDS)\\Bin\\win64debugide210.bpl"="(Untitled)"
"$(BDS)\\Bin\\GuidedTour210.bpl"="Embarcadero Guided Tour Package"
"$(BDS)\\Bin\\ModernTheme210.bpl"="(Untitled)"
"$(BDS)\\Bin\\asmview210.bpl"="Assembly Browser Package"
"$(BDS)\\Bin\\dbkdebugide210.bpl"="(Untitled)"
"$(BDS)\\Bin\\delphiwin32210.bpl"="Delphi Win32 Platform"
"$(BDS)\\Bin\\dotnetcoreide210.bpl"=".NET Core IDE Package"
"$(BDS)\\bin\\exceptiondiag210.bpl"="(Untitled)"
"$(BDS)\\bin\\fileexplorer210.bpl"="(Untitled)"
"$(BDS)\\bin\\historyide210.bpl"="(Untitled)"
"$(BDS)\\Bin\\htmlhelp2210.bpl"="HtmlHelp Viewer"
"$(BDS)\\bin\\idefilefilters210.bpl"="IDE File filters"
"$(BDS)\\bin\\plugview210.bpl"="Pluggable Tree View Package"
"$(BDS)\\Bin\\projpageide210.bpl"="Value Data: Project and template library package"
"$(BDS)\\Bin\\startpageide210.bpl"="Start Page IDE Package"
"$(BDS)\\Bin\\tlbview210.bpl"="TypeLibrary Browser Package"
"$(BDS)\\Bin\\codetemplates210.bpl"="(Untitled)"
"$(BDS)\\bin\\coreproide210.bpl"="Core IDE Pro Package"
"$(BDS)\\bin\\dbkdebugproide210.bpl"="(Untitled)"
"$(BDS)\\Bin\\profiledeployide210.bpl"="(Untitled)"
"$(BDS)\\Bin\\profilemgride210.bpl"="(Untitled)"
"$(BDS)\\Bin\\sdkmgride210.bpl"="Embarcadero SDK Manager"
"$(BDS)\\bin\\refactoride210.bpl"="Core Refactoring Package"
"$(BDS)\\bin\\todoide210.bpl"="ToDo"
"$(BDS)\\Bin\\comcore210.bpl"="HtmlHelp Viewer"
"$(BDS)\\Bin\\projecttargets210.bpl"="(Untitled)"
"$(BDS)\\Bin\\vclmenudesigner210.bpl"=".NET Core IDE Package"
"$(BDS)\\Bin\\DataExplorerIDE210.bpl"="(Untitled)"
"$(BDS)\\Bin\\unittestide210.bpl"="(Untitled)"
"$(BDS)\\Bin\\iteidew32210.bpl"="(Untitled)"
"$(BDS)\\Bin\\VisualizationServiceIDE210.bpl"="Visualization IDE Service Package"
"C:\\Users\\Public\\Documents\\Embarcadero\\Studio\\15.0\\Experts\\IDEFixPackStartup.bpl"="IDE Fix Pack Startup"


[UPDATE]
SOLUTION 2 (and cause):

After some work I discovered what caused this: The 'FMX controls' package was disabled (probably I disabled it since FMX is still infantile and I don't intend to use it right now). Re-enabling this package solved the problem.

Also removing "$(BDS)\\Bin\\delphiwin32210.bpl"="Delphi Win32 Platform" helped.