Problems using Microsoft Print to PDF with Dropbox folders

Lately when I try to use the Microsoft Print to PDF feature in Windows 10, it is unable to save to any Dropbox folder. It creates the file but it is 0 size. I can print in any folder other than Dropbox. I can print it to my desktop then copy the resulting file to Dropbox, but unable to print directly.

This had worked in the past, but just noticed it within the last few days.

There is no error that shows up to let you know it failed either. So unless you try to open the file, or notice the 0 file size you will assume it printed ok.

This also occurs with the printer "Microsoft XPS Document Writer" so it is not just the PDF.

This only occurs with my user account. 2 other accounts on the same machine do not have the same issue. So probably permissions issue somewhere?

I did find this error in the event log:

Log Name: Microsoft-Windows-PrintService/Admin
Microsoft-Windows-PrintService
Date: 9/7/2015 7:38:11 PM
Event ID: 372
Task Category: Printing a document
Level: Error
Keywords: Classic Spooler Event,Document Print Job
User: DESKTOP-ISAAC coat
Computer: DESKTOP-ISAAC
Description:
The document Print Document, owned by rcoat, failed to print on printer Microsoft Print to PDF. Try to print the document again, or restart the print spooler.
Data type: RAW. Size of the spool file in bytes: 262144. Number of bytes printed: 0. Total number of pages in the document: 2. Number of pages printed: 0. Client computer: \DESKTOP-ISAAC. Win32 error code returned by the print processor: 1801. The printer name is invalid.

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-PrintService" Guid="{747EF6FD-E535-4D16-B510-42C90F6873A1}" />
<EventID>372</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>26</Task>
<Opcode>12</Opcode>
<Keywords>0x8000000000000840</Keywords>
<TimeCreated SystemTime="2015-09-08T02:38:11.470273100Z" />
<EventRecordID>149</EventRecordID>
<Correlation />
<Execution ProcessID="1692" ThreadID="5540" />
<Channel>Microsoft-Windows-PrintService/Admin</Channel>
<Computer>DESKTOP-ISAAC</Computer>
<Security UserID="S-1-5-21-2161939095-3448053643-2152722755-1002" />
</System>
<UserData>
<PrintOnProcFailedEd xmlns="http://manifests.microsoft.com/win/2005/08/windows/printing/spooler/core/events">
<Param1>Print Document</Param1>
<Param2>rcoat</Param2>
<Param3>Microsoft Print to PDF</Param3>
<Param4>RAW</Param4>
<Param5>262144</Param5>
<Param6>0</Param6>
<Param7>2</Param7>
<Param8>0</Param8>
<Param9>\DESKTOP-ISAAC</Param9>
<Param10>1801</Param10>
<Param11>The printer name is invalid.
</Param11>
</PrintOnProcFailedEd>
</UserData>
</Event>

What I did that fixed it was to Unlink dropbox in the problem account. deleted dropbox folder, then relinked dropbox, which created the folder again and populated it from online.