"Something broke down in dnGrep"

[page200]

dnGrep is not starting:

End of Grep_Error_Log.xml:

<logevent time="2023-08-06 16:59:37.9740" level="Error" logger="dnGREP.Common.GrepSettings">
  <message>Error converting settings key [PreviewWindowWrap] of type [System.Boolean] from value [AAEAAAD/////AQAAAAAAAAA[redacted]=]</message>
  <exception>System.FormatException: String &apos;AAEAAAD/////AQAAAAAAAAAEA[redacted]AQs=&apos; was not recognized as a valid Boolean.
   at System.Boolean.Parse(ReadOnlySpan`1 value)
   at System.String.System.IConvertible.ToBoolean(IFormatProvider provider)
   at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
   at dnGREP.Common.GrepSettings.Get[T](String key) in C:\projects\dngrep\dnGREP.Common\GrepApplicationSettings.cs:line 850</exception>
</logevent>
<logevent time="2023-08-06 16:59:38.3236" level="Error" logger="dnGREP.Common.GrepSettings">
  <message>Error converting settings key [StartDate] of type [System.Nullable`1[System.DateTime]] from value [AAEAAAD/////AQAAAAAAAA[redacted]AAAAAAAAAAAAAAAAAAAAAL]</message>
  <exception>System.InvalidOperationException: Null default is not allowed for key StartDate
   at dnGREP.Common.GrepSettings.GetDefaultValue[T](String key) in C:\projects\dngrep\dnGREP.Common\GrepApplicationSettings.cs:line 980
   at dnGREP.Common.GrepSettings.Get[T](String key) in C:\projects\dngrep\dnGREP.Common\GrepApplicationSettings.cs:line 809</exception>
</logevent>
<logevent time="2023-08-06 16:59:38.3236" level="Error" logger="dnGREP.WPF.App">
  <message>Failure in application startup</message>
  <exception>System.InvalidOperationException: Null default is not allowed for key StartDate
   at dnGREP.Common.GrepSettings.GetDefaultValue[T](String key) in C:\projects\dngrep\dnGREP.Common\GrepApplicationSettings.cs:line 980
   at dnGREP.Common.GrepSettings.Get[T](String key) in C:\projects\dngrep\dnGREP.Common\GrepApplicationSettings.cs:line 858
   at dnGREP.Common.GrepSettings.GetNullable[T](String key) in C:\projects\dngrep\dnGREP.Common\GrepApplicationSettings.cs:line 722
   at dnGREP.WPF.BaseMainViewModel.LoadSettings() in C:\projects\dngrep\dnGrep.WPF\ViewModels\BaseMainViewModel.cs:line 866
   at dnGREP.WPF.MainViewModel.LoadSettings() in C:\projects\dngrep\dnGrep.WPF\ViewModels\MainViewModel.cs:line 703
   at dnGREP.WPF.BaseMainViewModel..ctor() in C:\projects\dngrep\dnGrep.WPF\ViewModels\BaseMainViewModel.cs:line 36
   at dnGREP.WPF.MainViewModel..ctor() in C:\projects\dngrep\dnGrep.WPF\ViewModels\MainViewModel.cs:line 45
   at dnGREP.WPF.MainForm..ctor(Boolean isVisible) in C:\projects\dngrep\dnGrep.WPF\Views\MainView.xaml.cs:line 97
   at dnGREP.WPF.App.Application_Startup(Object sender, StartupEventArgs e) in C:\projects\dngrep\dnGrep.WPF\App.xaml.cs:line 63</exception>
</logevent>

[doug24]

What version are you running? This looks like a bug that was fixed in v4.0.45, previously reported in #887

[page200]

Sorry about the lacking info - I used dnGREP.4.0.45.x64.msi
I had installed it on top of a much older version. After the error, I uninstalled dnGrep and reinstalled dnGREP.4.0.45.x64.msi again from scratch, but the error remained.

[doug24]

That's strange, it's the same error. Can you attach your copy of dnGREP.Settings.dat so I can debug this?
It is located in C:\Users_username_\AppData\Roaming\dnGREP

[doug24]

I did find the problem in the logs above (it wasn't the first or second, it was the third one and I stopped reading too soon).

I'd still like to test with your old dnGREP.Settings.dat file go see if there are any other problems.

I'm planning a new release on Tuesday or Wednesday this week. In the meantime, if you want to fix your settings.dat file, replace the StartDate and EndDate with these two lines:

  <item key="StartDate" xsi:nil="true" />
  <item key="EndDate" xsi:nil="true" />

[doug24]

Fixed in v4.0.69.0

[page200]

Sorry about the late reply. Shortly after I opened this issue, I uninstalled the new version and installed Version 3.2.330.0 because it works and I needed to use it. Would the dnGREP.Settings.dat file still be useful for you now that I switched to Version 3.2.330.0 and even if I redact for privacy reasons the things I don't understand such as the strings that contain "AAAAA"?

Thank you for the wonderful app!

[loumarquesls]

Had the same problem, just deleted the folder appdata\roaming\dngrep (from the older version I used) and it worked fine

[doug24]

Yes, please attach any dnGrep.Settings.dat files you still have so I can debug these issues.

There is nothing private or encrypted in the strings like 'AAEAAAD/////AQAAAAAAAA...' that's just how .NET serializes nullable data such as a nullable Boolean or nullable DateTime. But redact them is you want.

[page200]

Here's the file, with some stuff replaced by backticks. Somehow this time there are no more nullable data.

<dictionary version="2" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <item key="ApplicationFontFamily">Segoe UI</item>
  <item key="MainFormFontSize">12</item>
  <item key="ReplaceFormFontSize">12</item>
  <item key="DialogFontSize">12</item>
  <item key="ResultsFontFamily">Consolas</item>
  <item key="ResultsFontSize">12</item>
  <item key="SearchFolder">``````</item>
  <item key="SearchFor">``````</item>
  <item key="ReplaceWith">``````</item>
  <item key="FilePattern">*.*</item>
  <item key="FilePatternIgnore">*.o</item>
  <item key="LastCheckedVersion">2023-08-09T11:22:04</item>
  <item key="FastSearchBookmarks">
    <stringArray>
      <string isPinned="false">``````</string>
    </stringArray>
  </item>
  <item key="FastReplaceBookmarks">
    <stringArray>
      <string isPinned="false">``````</string>
    </stringArray>
  </item>
  <item key="FastFileMatchBookmarks">
    <stringArray>
      <string isPinned="false">*.*</string>``````
    </stringArray>
  </item>
  <item key="FastFileNotMatchBookmarks">
    <stringArray>
      <string isPinned="false">*.o</string>``````
      <string isPinned="false"></string>
    </stringArray>
  </item>
  <item key="FastPathBookmarks">
    <stringArray>``````
    </stringArray>
  </item>
  <item key="SortDirection">Ascending</item>
  <item key="TypeOfSort">FileNameDepthFirst</item>
  <item key="ShowResultOptions">True</item>
  <item key="ResultsTreeScale">1</item>
  <item key="ResultsTreeWrap">False</item>
  <item key="HighlightMatches">True</item>
  <item key="ShowLinesInContext">True</item>
  <item key="ContextLinesBefore">2</item>
  <item key="ContextLinesAfter">3</item>
  <item key="PreviewBounds">0,0,0,0</item>
  <item key="PreviewWindowState">Normal</item>
  <item key="PreviewDocked">True</item>
  <item key="PreviewDockSide">Right</item>
  <item key="PreviewDockedWidth">``````</item>
  <item key="PreviewDockedHeight">``````</item>
  <item key="PreviewHidden">False</item>
  <item key="PreviewAutoPosition">True</item>
  <item key="IncludeHidden">True</item>
  <item key="IncludeBinary">True</item>
  <item key="IncludeArchive">False</item>
  <item key="SearchParallel">True</item>
  <item key="IncludeSubfolder">True</item>
  <item key="MaxSubfolderDepth">-1</item>
  <item key="FollowSymlinks">False</item>
  <item key="SkipRemoteCloudStorageFiles">True</item>
  <item key="TypeOfSearch">PlainText</item>
  <item key="CodePage">-1</item>
  <item key="TypeOfFileSearch">Asterisk</item>
  <item key="UseGitignore">False</item>
  <item key="UseFileSizeFilter">No</item>
  <item key="CaseSensitive">False</item>
  <item key="Multiline">False</item>
  <item key="Singleline">False</item>
  <item key="StopAfterFirstMatch">False</item>
  <item key="WholeWord">False</item>
  <item key="BooleanOperators">False</item>
  <item key="CaptureGroupSearch">False</item>
  <item key="HighlightCaptureGroups">False</item>
  <item key="SizeFrom">0</item>
  <item key="SizeTo">100</item>
  <item key="IsFiltersExpanded">False</item>
  <item key="PreviewFileContent">True</item>
  <item key="UseFileDateFilter">All</item>
  <item key="TypeOfTimeRangeFilter">All</item>
  <item key="StartDate" xsi:nil="true" />
  <item key="EndDate" xsi:nil="true" />
  <item key="HoursFrom">0</item>
  <item key="HoursTo">8</item>
  <item key="MainWindowBounds">``````</item>
  <item key="MainWindowState">Maximized</item>
  <item key="PreviewWindowWrap">True</item>
  <item key="PreviewWindowFont">12</item>
  <item key="PersonalizationOn">False</item>
  <item key="ReplaceWindowWrap">False</item>
  <item key="ReplaceWindowFontSize">14</item>
  <item key="ReplaceBounds">``````</item>
  <item key="RestoreLastModifiedDate">False</item>
</dictionary>

[doug24]

@page200 - thanks for posting. I started dnGrep with your settings exactly as copied above, and there were no errors.