Exported ODT cannot be opened in LibreOffice.

[Google Code Exporter]

What steps will reproduce the problem?
1. Create a document
2. Add pages and shapes and stuff
3. Export to ODT
4. Attempt to open ODT file with LibreOffice

What is the expected output? What do you see instead?
The exported file should be successfully opened in LibreOffice.  Instead, I get 
the error "General Error.  General input/output error."

What version of the product are you using? On what operating system?
Pencil 2.0.5 and LibreOffice 4.2.5.2 on Windows 7 64-bit

Please provide any additional information below.
Honestly, you guys should consider updating your export options to include ODG 
format.  Your product is seriously one of the nicest-looking flowchart 
generators out there, but without any kind of usable cross-application 
compatibility, it's kinda useless in my opinion.

I also noticed an export-to-PDF bug where the PDF pages were all 8.5x11", even 
when MUCH MUCH taller pages were exported.  This PDF export bug would cause the 
bottoms of long flowcharts to get cut off.

Original issue reported on code.google.com by [e-mail] on 11 Sep 2014 at 10:24