Error: Invalid length parameter passed to the LEFT or SUBSTRING function.

[pfenton]

This report worked fine until the last Lansweeper update: 7.2.105.2. Now I get the error message: Error: Invalid length parameter passed to the LEFT or SUBSTRING function.

Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
SubString(tblNtlogMessage.Message, CharIndex('Account Name:',
tblNtlogMessage.Message, CharIndex('Account Domain', tblNtlogMessage.Message))
+ 14, CharIndex('Account Domain:', tblNtlogMessage.Message,
CharIndex('Logon Type:', tblNtlogMessage.Message)) -
CharIndex('Account Name:', tblNtlogMessage.Message,
CharIndex('Account Domain', tblNtlogMessage.Message)) - 14) As Account,
SubString(tblNtlogMessage.Message, CharIndex('Account Domain:',
tblNtlogMessage.Message, CharIndex('Logon Type:', tblNtlogMessage.Message)) +
16, CharIndex('Failure Information:', tblNtlogMessage.Message) -
CharIndex('Account Domain:', tblNtlogMessage.Message, CharIndex('Logon Type:',
tblNtlogMessage.Message)) - 16) As 'Account Domain',
SubString(tblNtlogMessage.Message, CharIndex('Failure Reason:',
tblNtlogMessage.Message) + 16, CharIndex('Status', tblNtlogMessage.Message) -
CharIndex('Failure Reason:', tblNtlogMessage.Message) - 16) As Reason,
tblNtlog.TimeGenerated
From tblAssets
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Inner Join tblNtlog On tblAssets.AssetID = tblNtlog.AssetID
Inner Join tblNtlogMessage On tblNtlogMessage.MessageID = tblNtlog.MessageID
Inner Join tblNtlogSource On tblNtlogSource.SourcenameID =
tblNtlog.SourcenameID
Where tblNtlog.TimeGenerated > GetDate() - 1 And tblNtlog.Eventcode = 4625 And
tblAssetCustom.State = 1
Order By tblNtlog.TimeGenerated Desc