Problem With Querying Date Range In Query Form

I am working on a query form, in which user can enter three parameters: date range (datefrom field, and dateto field), 1st selection of category (a drop-down menu, multi-selection enhanced), 2nd selection of category (a drop-down menu, multi-selection enhanced. By clicking command button, user can choose whether the result show in query table, or in a report. It didn't work... the error has something to do with the date criteria. If I remove the date criteria, i.e. just allowing selection of two categories, it works perfectly fine.

I've checked out many postings in this forum, but it doesn't take me far... below is the code, please please help....
Note: the cmdOK is the name of the command button for presenting results from query table.
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Private Sub cmdOK_Click()
On Error GoTo cmdOK_Click_Err
Dim blnQueryExists As Boolean
Dim cat As New ADOX.Catalog
Dim cmd As New ADODB.Command
Dim qry As ADOX.View
Dim varItem As Variant
Dim strDate As String
Dim str1MainCate As String
Dim str2MainCate As String
Dim str1MainCateCondition As String
Dim str2MainCateCondition As String
Dim strSQL As String
' Check for the existence of the stored query
blnQueryExists = False
Set cat.ActiveConnection = CurrentProject.Connection
For Each qry In cat.Views
If qry.Name = "QryCateDateForm" Then
blnQueryExists = True
Exit For
End If
Next qry
' Create the query if it does not already exist
If blnQueryExists = False Then
cmd.CommandText = "SELECT NewsClips.IssueDate, NewsClips.Title_Eng, NewsClips.Titile_Chi, NewsClips.NewsSource, NewsClips.[1CategoryMain], NewsClips.[1Sub-Category], NewsClips.[2CategoryMain], NewsClips.[2Sub-Category], NewsClips.hyperlink, NewsClips.FirstTwoPara, NewsClips.Notes, NewsClips.attachment FROM NewsClips"
cat.Views.Append "QryCateDateForm", cmd
End If
Application.RefreshDatabaseWindow
' Turn off screen updating
DoCmd.Echo False
' Close the query if it is already open
If SysCmd(acSysCmdGetObjectState, acQuery, "QryCateDateForm") = acObjStateOpen Then
DoCmd.Close acQuery, "QryCateDateForm"
End If
' Build criteria string for Date
strDate = "(((NewsClips.IssueDate) Between #" & datefrom & "# And #" & dateTo & "#))"
' Build criteria string for 1MainCate
For Each varItem In Me.fstMainCate.ItemsSelected
str1MainCate = str1MainCate & ",'" & Me.fstMainCate.ItemData(varItem) & "'"
Next varItem
If Len(str1MainCate) = 0 Then
str1MainCate = "Like '*'"
Else
str1MainCate = Right(str1MainCate, Len(str1MainCate) - 1)
str1MainCate = "IN(" & str1MainCate & ")"
End If
' Build criteria string for 2MainCate
For Each varItem In Me.SecMainCate.ItemsSelected
str2MainCate = str2MainCate & ",'" & Me.SecMainCate.ItemData(varItem) & "'"
Next varItem
If Len(str2MainCate) = 0 Then
str2MainCate = "Like '*'"
Else
str2MainCate = Right(str2MainCate, Len(str2MainCate) - 1)
str2MainCate = "IN(" & str2MainCate & ")"
End If
' Get 1MainCate condition
If Me.optAnd1MainCate.Value = True Then
str1MainCateCondition = " AND "
Else
str1MainCateCondition = " OR "
End If
' Get 2MainCate condition
If Me.optAnd2MainCate.Value = True Then
str2MainCateCondition = " AND "
Else
str2MainCateCondition = " OR "
End If
' Build SQL statement
strSQL = " SELECT NewsClips.IssueDate, NewsClips.Title_Eng, NewsClips.Titile_Chi, NewsClips.NewsSource, NewsClips.[1CategoryMain], NewsClips.[1Sub-Category], NewsClips.[2CategoryMain], NewsClips.[2Sub-Category], NewsClips.hyperlink, NewsClips.FirstTwoPara, NewsClips.Notes, NewsClips.attachment FROM NewsClips " & _
"WHERE NewsClips.[IssueDate] " & strDate & _
str1MainCateCondition & "NewsClips.[1CategoryMain] " & str1MainCate & _
str2MainCateCondition & "NewsClips.[2CategoryMain] " & str2MainCate & ";"
' Apply the SQL statement to the stored query
cat.ActiveConnection = CurrentProject.Connection
Set cmd = cat.Views("QryCateDateForm").Command
cmd.CommandText = strSQL
Set cat.Views("QryCateDateForm").Command = cmd
Set cat = Nothing
' Open the Query
DoCmd.OpenQuery "QryCateDateForm"
' If required the dialog can be closed at this point
' DoCmd.Close acForm, Me.Name
' Restore screen updating
cmdOK_Click_Exit:
DoCmd.Echo True
Exit Sub
cmdOK_Click_Err:
MsgBox "An unexpected error has occurred." _
& vbCrLf & "Procedure: cmdOK_Click" _
& vbCrLf & "Error Number: " & Err.Number _
& vbCrLf & "Error Description:" & Err.Description _
, vbCritical, "Error"
Resume cmdOK_Click_Exit


End Sub
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