Report for Displaying Windows 10 Builds stopped working

[AluluxGmbH]

Hello, this report used to work fine in the past, now I get this error message:

"Error: Fehler beim Konvertieren des varchar-Datentyps in bigint." , something like "Error converting the varchar-Datatype to bigint"

I havn´t changed anything in this report, i guess i just downloaded it here some years ago:

Select Top (1000000) SQ.OS,
  SQ.[OS Version],
  Count(SQ.[OS Version]) As Anzahl
From (Select tsysOS.Image As icon,
      tblAssets.AssetID,
      tblAssets.AssetName,
      tsysOS.OSname As OS,
      tblAssets.OScode + '.' + tblAssets.BuildNumber As Build,
      tblAssets.Version As [OS Version],
      tblAssets.Domain,
      tblAssets.Username,
      tblAssets.Userdomain,
      tblAssets.IPAddress,
      tblAssets.Description,
      tblAssetCustom.Manufacturer,
      tblAssetCustom.Model,
      tblAssetCustom.Location,
      tsysIPLocations.IPLocation,
      tblAssets.Firstseen,
      tblAssets.Lastseen,
      Cast(Replace(Replace(Replace(tblAssets.OScode, '.', ''), 'S', ''), 'R',
      '') As BIGINT) As OsCodeNumeric,
      Cast(tblAssets.BuildNumber As INT) As BuildNumber
    From tblAssets
      Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
      Inner Join tsysOS On tblAssets.OScode = tsysOS.OScode
      Left Join tsysIPLocations On tblAssets.LocationID =
          tsysIPLocations.LocationID
    Where tsysOS.OSname = 'Win 10' And tblAssetCustom.State = 1 And
      tblAssets.BuildNumber Is Not Null) SQ
  Cross Join (Select Max(os1.OSCodeNumeric) MaxOsCodeNumeric
    From tsysOS os1
    Where os1.Sortorder = 18) mo
  Cross Join (Select Max(Cast(a.BuildNumber As INT)) MaxBuildNumber
    From tblAssets a
      Inner Join tsysOS As o On o.OScode = a.OScode
    Where o.OSname = 'Win 10' And a.BuildNumber Is Not Null And
      Cast(Replace(Replace(Replace(a.OScode, '.', ''), 'S', ''), 'R',
      '') As BIGINT) = (Select Max(os2.OSCodeNumeric) From tsysOS os2
        Where os2.Sortorder = 18)) mb
Where (SQ.OsCodeNumeric < mo.MaxOsCodeNumeric) Or
  (SQ.BuildNumber < mb.MaxBuildNumber)
Group By SQ.OS,
  SQ.[OS Version]
Order By 'OS Version'