Could not compute value for ComputedIndexField: sizerange for indexable

If during indexing you can find the following exception in Crawling.log:

It means that probably some of your media items have a wrong values

Now, you have a difficult choice to make

If you chose to manually solve the problem, you can finish reading here.

Below you can find a ugly Powershell script that will do job automatically and generate at the end report about changes.

	#
	# Fix value '123 x 123' in Size field to the proper image size (bytes).
	# Author: Robert Senktas
	#
	$sitecorePath = "master:/sitecore/media library"

	$processedItems = Get-ChildItem -Path $sitecorePath -Recurse \| ForEach-Object {
	if ( $_.Size -match "x" ) {
	$mediaItem = New-Object "Sitecore.Data.Items.MediaItem" $_

	[Sitecore.Resources.Media.Media] $media = [Sitecore.Resources.Media.MediaManager]::GetMedia($mediaItem);
	$stream = $media.GetStream()

	$reportItem = [PSCustomObject]@{
	ID = $_.ID
	Path = $_.Paths.Path
	Size = $_.Size
	Length = $stream.Length
	}

	$_.Editing.BeginEdit()
	$_["Size"] = $stream.Length
	$_.Editing.EndEdit()

	$_ \| Publish-Item -PublishMode SingleItem -Verbose

	return $reportItem
	}
	}

	# Generate a report
	Import-Function -Name ConvertTo-Xlsx

	[byte[]]$outobject = $processedItems \|
	Select-Object -Property ID, Path, Size, Length \|
	ConvertTo-Xlsx

	Out-Download -Name "report-change-image-size-.xlsx" -InputObject $outobject

Below the report.