abrt 1.0.8 detected a crash.

architecture: i686
cmdline: /usr/bin/python /usr/bin/pdfshuffler
component: pdfshuffler
executable: /usr/bin/pdfshuffler
kernel: 2.6.32.9-70.fc12.i686.PAE
package: pdfshuffler-0.4.2-2.fc12
reason: pdf.py:593:readObjectHeader:ValueError: invalid literal for int() with base 10: ''
release: Fedora release 12 (Constantine)

backtrace
-----
pdf.py:593:readObjectHeader:ValueError: invalid literal for int() with base 10: ''

Traceback (most recent call last):
  File "/usr/bin/pdfshuffler", line 415, in export_pdf
    current_page = pdf_input[nfile-1].getPage(npage-1)
  File "/usr/lib/python2.6/site-packages/pyPdf/pdf.py", line 353, in getPage
    self._flatten()
  File "/usr/lib/python2.6/site-packages/pyPdf/pdf.py", line 499, in _flatten
    catalog = self.trailer["/Root"].getObject()
  File "/usr/lib/python2.6/site-packages/pyPdf/generic.py", line 466, in __getitem__
    return dict.__getitem__(self, key).getObject()
  File "/usr/lib/python2.6/site-packages/pyPdf/generic.py", line 165, in getObject
    return self.pdf.getObject(self).getObject()
  File "/usr/lib/python2.6/site-packages/pyPdf/pdf.py", line 546, in getObject
    idnum, generation = self.readObjectHeader(self.stream)
  File "/usr/lib/python2.6/site-packages/pyPdf/pdf.py", line 593, in readObjectHeader
    return int(idnum), int(generation)
ValueError: invalid literal for int() with base 10: ''

Local variables in innermost frame:
generation: ''
idnum: '1'
self: <pyPdf.pdf.PdfFileReader object at 0x8ad5dec>
obj: '0 o'
stream: <open file '/tmp/tmp1MR2LSpdfshuffler/01_My PDF File.pdf', mode 'rb' at 0x8adf340>

comment
-----
After clicking "Save" nothing seemed to happen except for the Crash Detection.  In other words, the Save As dialog remained open.  Clicking Canel/Save had no affect.  I had to click the close icon on the window's title bar.  Once the Save Dialog was closed, I had to click "Quit" to exit pdfshuffler.

Also note my page size is 7.96 x 3.50 inch for both pages.

How to reproduce
-----
1.Start pdfshuffler
2.Drag first single page PDF file /home/me/Desktop/My PDF File.pdf to PDF-Shuffler window
3.Drag second single page PDF file /home/me/Desktop/AnotherPDF.pdf to PDF-Shuffler window
4.Click "Export PDF..."
5.Give save as name of /home/me/Desktop/MyNewPDF.pdf
6.Click "Save"