In Expert 11, Lesson 05, Last Customer Contact, I built the DLOOKUP function in the second query and it works fine.  When I use it using that template with my own data, I get a runtime error "The expression you entered has an invalid date value."
The in-class function which works is:
ContactNotes: DLookUp("Notes","ContactT","CustomerID =" & [CustomerID] & " AND DateTime=#" & [MaxOfDateTime] & "#")

I get the error with:

LastJournalEntry: DLookUp("Entry","JournalEvalT","JournalEvalT.ProjectID= & [MostRecentEntryDateQ].[ProjectID] & " AND EntryDate= # " & [MostRecentEntryDateQ].[MaxOfEntryDate] & "#")
I haven't found the solution here, in the Access Bible or with Mr. Google.

Please let me know how to post a screen clip.