How can a run a script rule be reset after it stops working?

Question

I cobbled together a script and rule to save incoming emails as .txt files on our server.

It works for about a day or two, but then stops working until I delete and remake the rule.

It seems if the server times out, the rule throws an error and will not reset.

How can the rule/script be reset after an error?

Sub AutoSaveAsTxt(Item As Outlook.MailItem)
On Error Resume Next
Dim oMail As Outlook.MailItem
Dim objItem As Object
Dim sPath As String
Dim dtDate As Date
Dim sName As String
Dim rName As String
Dim subName As String
Dim fName As String
Dim enviro As String
  
If Item.Class = olMail Then
    Set oMail = Item
End If
 
dtDate = oMail.SentOn

Dim intSeconds As Integer
intSeconds = Second(dtDate)
If intSeconds > 29 Then
    dtDate = DateAdd("s", 60 - intSeconds, dtDate)
End If

sName = oMail.SenderName
If sName = "" Then
    sName = "[No Sender Name]"
End If

rName = oMail.Recipients(1)
If rName = "" Then
    rName = "[No Recipient Name]"
End If

subName = oMail.Subject
If subName = "" Then
    subName = "[No Subject Line]"
End If

fName = Format(dtDate, "yymmdd.hhmm", vbUseSystemDayOfWeek, _
  vbUseSystem) & "." & sName & "." & rName & "." & subName & ".txt"
ReplaceCharsForFileName fName, ""

'Don't forget to Change user name and create the folder prior to use'
sPath = enviro & "\\server1\d-drive\Saved Emails\Johnny Emails\"
Debug.Print sPath & fName
oMail.SaveAs sPath & fName, olTXT
Set oMail = Nothing
End Sub

 
Private Sub ReplaceCharsForFileName(sName As String, sChr As String)
    sName = Replace(sName, "'", sChr)
    sName = Replace(sName, "*", sChr)
    sName = Replace(sName, "/", sChr)
    sName = Replace(sName, "\", sChr)
    sName = Replace(sName, ":", sChr)
    sName = Replace(sName, "?", sChr)
    sName = Replace(sName, Chr(34), sChr)
    sName = Replace(sName, "<", sChr)
    sName = Replace(sName, ">", sChr)
    sName = Replace(sName, "|", sChr)
End Sub

Rule:

Apply this rule after the message arrives
run Project1.AutoSaveAsTxt
except with 'mycase' or 'azbar' in the sender's address