We tried various ways to get this to install and finally found a decent option that was pretty easy to deploy and update via Intune. 

I just downloaded the apps we needed to a folder on the C drive. 

Packaged the app as Win32 and just used a powershell script: 

# -------------------------------
# Configurable Paths & Packages
# -------------------------------
$LFGetPath  = 'C:\LFTemp\lf12.02\LFGet.exe'
$SourceRoot = 'C:\LFTemp\lf12.02'
$LogDir     = Join-Path $env:ProgramData 'LFInstallLogs'
$TempDir    = Join-Path $env:TEMP 'LFTemp'

# List of package EXE filenames (must exist under $SourceRoot)
$Packages = @(
    'Snapshot 12.0.2509.942.exe'
    'WebToolsAgent 11.0.2509.11.exe'
    'OCR 12.0.2509.116.exe'
    'OfficePluginSetup 11.1.2601.902.exe'
    'ScanningSetup 12.0.2507.188.exe'
    'WindowsClient 12.0.2510.972.exe'
)

# -------------------------------
# Prep logging
# -------------------------------
New-Item -ItemType Directory -Path $LogDir -Force | Out-Null
New-Item -ItemType Directory -Path $TempDir -Force | Out-Null

$timestamp   = Get-Date -Format 'yyyyMMdd-HHmmss'
$PSLog       = Join-Path $LogDir "LF_Install_$timestamp.log"
Start-Transcript -Path $PSLog -Append | Out-Null

Write-Host "Installing Laserfiche components..." -ForegroundColor Cyan

# -------------------------------
# Helper: Install one package
# -------------------------------
$global:NeedsReboot = $false
$global:Failures    = @()

function Install-LFPackage {
    param(
        [Parameter(Mandatory=$true)][string] $ExeName
    )

    $packagePath = Join-Path $SourceRoot $ExeName

    if (!(Test-Path -LiteralPath $packagePath)) {
        $msg = "MISSING: $packagePath not found."
        Write-Warning $msg
        $global:Failures += $msg
        return
    }

    if (!(Test-Path -LiteralPath $LFGetPath)) {
        $msg = "MISSING: LFGet.exe not found at $LFGetPath."
        Write-Error $msg
        $global:Failures += $msg
        return
    }

    $args = @(
        'install-local-package'
        '--package', "`"$packagePath`""
        '--iacceptlicenseagreement'
        '--iagreetoprereqs'
        '--log', "`"$LogDir`""
        '--temp-dir', "`"$TempDir`""
    )

    Write-Host "Installing: $ExeName" -ForegroundColor Yellow
    $proc = Start-Process -FilePath $LFGetPath -ArgumentList $args -Wait -PassThru -WindowStyle Hidden

    $exitCode = $proc.ExitCode
    Write-Host "ExitCode ($ExeName): $exitCode"

    switch ($exitCode) {
        0 { return }
        3010 { $global:NeedsReboot = $true; return }
        1641 { $global:NeedsReboot = $true; return } # 1641 = hard reboot required (MSI)
        default {
            $msg = "FAILED ($ExeName): ExitCode=$exitCode"
            Write-Error $msg
            $global:Failures += $msg
        }
    }
}

# -------------------------------
# Execute all installs
# -------------------------------
foreach ($pkg in $Packages) {
    Install-LFPackage -ExeName $pkg
}

Stop-Transcript | Out-Null

# -------------------------------
# Return proper exit code to Intune
# -------------------------------
if ($global:Failures.Count -gt 0) {
    Write-Host "One or more installations failed. See $PSLog and component logs in $LogDir." -ForegroundColor Red
    exit 1
}

if ($global:NeedsReboot) {
    Write-Host "Installations succeeded, reboot required." -ForegroundColor Yellow
    exit 3010
}

Write-Host "All installations succeeded." -ForegroundColor Green
exit 0

It seems to work much easier than the rest of the ways I have found.