Issue with "Error: Unhandled exception"

kanyiva · 05-31-2012, 01:32 PM

Good day. I keep running into the error message below when I try to open select books in Calibre. I would appreciate any help. Thanks.

calibre, version 0.8.54
ERROR: Unhandled exception: <b>UnboundLocalError</b>:local variable 'i' referenced before assignment

Traceback (most recent call last):
File "site-packages/calibre/gui2/viewer/main.py", line 848, in load_ebook
File "site-packages/calibre/gui2/viewer/toc.py", line 153, in __init__
File "site-packages/calibre/gui2/viewer/toc.py", line 72, in __init__
UnboundLocalError: local variable 'i' referenced before assignment

kovidgoyal · 05-31-2012, 02:18 PM

That's a weird error, the only way I can think of it happening is if the spine of the book is empty. Can you open a bug report and attach one of these files. I can at least fix the viewer to handle this case more gracefully.

kanyiva · 06-01-2012, 11:36 PM

Thank you for your prompt response. I have gone ahead and submitted a bug report. Thanks again.

Mi3ke · 06-03-2012, 09:51 PM

Hi I too seem to have this error:
calibre, version 0.8.49
ERROR: Unhandled exception: <b>CriticalError</b>:Failed to launch worker process:
Traceback (most recent call last):
File "site-packages\calibre\utils\ipc\server.py", line 149, in do_launch
File "multiprocessing\connection.py", line 121, in accept
File "multiprocessing\connection.py", line 368, in deliver_challenge
File "site.py", line 66, in load_module
ZipImportError: can't find module hmac

Traceback (most recent call last):
File "site-packages\calibre\gui2\actions\view.py", line 201, in view_triggered
File "site-packages\calibre\gui2\actions\view.py", line 269, in _view_books
File "site-packages\calibre\gui2\actions\view.py", line 236, in _view_calibre_books
File "site-packages\calibre\gui2\actions\view.py", line 101, in view_format_by_id
File "site-packages\calibre\gui2\actions\view.py", line 132, in _view_file
File "site-packages\calibre\gui2\actions\view.py", line 120, in _launch_viewer
File "site-packages\calibre\gui2\jobs.py", line 249, in launch_gui_app
File "site-packages\calibre\utils\ipc\server.py", line 166, in run_job
File "site-packages\calibre\utils\ipc\server.py", line 139, in launch_worker
CriticalError: Failed to launch worker process:
Traceback (most recent call last):
File "site-packages\calibre\utils\ipc\server.py", line 149, in do_launch
File "multiprocessing\connection.py", line 121, in accept
File "multiprocessing\connection.py", line 368, in deliver_challenge
File "site.py", line 66, in load_module
ZipImportError: can't find module hmac

I'm brand new to this site and its forums. I also placed a similar question on the "Comments, Questions" thread.

Where do I go to start a bug report?
Thanks very much.

Mi3ke · 06-03-2012, 10:09 PM

It seems you get that error if you've downloaded the latest update, told it to go ahead and do its thing, But have not *actually* restarted the computer to seal the deal.
My books now seem to be opening as before. Sorry for the hoorah !

05-31-2012, 01:32 PM	#1
kanyiva Junior Member Posts: 6 Karma: 10 Join Date: May 2012 Device: iPad2	Issue with "Error: Unhandled exception" Good day. I keep running into the error message below when I try to open select books in Calibre. I would appreciate any help. Thanks. calibre, version 0.8.54 ERROR: Unhandled exception: <b>UnboundLocalError</b>:local variable 'i' referenced before assignment Traceback (most recent call last): File "site-packages/calibre/gui2/viewer/main.py", line 848, in load_ebook File "site-packages/calibre/gui2/viewer/toc.py", line 153, in __init__ File "site-packages/calibre/gui2/viewer/toc.py", line 72, in __init__ UnboundLocalError: local variable 'i' referenced before assignment

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05-31-2012, 02:18 PM	#2
kovidgoyal creator of calibre Posts: 43,860 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	That's a weird error, the only way I can think of it happening is if the spine of the book is empty. Can you open a bug report and attach one of these files. I can at least fix the viewer to handle this case more gracefully.

06-01-2012, 11:36 PM	#3
kanyiva Junior Member Posts: 6 Karma: 10 Join Date: May 2012 Device: iPad2	Thank you for your prompt response. I have gone ahead and submitted a bug report. Thanks again.

06-03-2012, 09:51 PM	#4
Mi3ke Junior Member Posts: 3 Karma: 10 Join Date: Jun 2012 Device: Nook	Hi I too seem to have this error: calibre, version 0.8.49 ERROR: Unhandled exception: <b>CriticalError</b>:Failed to launch worker process: Traceback (most recent call last): File "site-packages\calibre\utils\ipc\server.py", line 149, in do_launch File "multiprocessing\connection.py", line 121, in accept File "multiprocessing\connection.py", line 368, in deliver_challenge File "site.py", line 66, in load_module ZipImportError: can't find module hmac Traceback (most recent call last): File "site-packages\calibre\gui2\actions\view.py", line 201, in view_triggered File "site-packages\calibre\gui2\actions\view.py", line 269, in _view_books File "site-packages\calibre\gui2\actions\view.py", line 236, in _view_calibre_books File "site-packages\calibre\gui2\actions\view.py", line 101, in view_format_by_id File "site-packages\calibre\gui2\actions\view.py", line 132, in _view_file File "site-packages\calibre\gui2\actions\view.py", line 120, in _launch_viewer File "site-packages\calibre\gui2\jobs.py", line 249, in launch_gui_app File "site-packages\calibre\utils\ipc\server.py", line 166, in run_job File "site-packages\calibre\utils\ipc\server.py", line 139, in launch_worker CriticalError: Failed to launch worker process: Traceback (most recent call last): File "site-packages\calibre\utils\ipc\server.py", line 149, in do_launch File "multiprocessing\connection.py", line 121, in accept File "multiprocessing\connection.py", line 368, in deliver_challenge File "site.py", line 66, in load_module ZipImportError: can't find module hmac I'm brand new to this site and its forums. I also placed a similar question on the "Comments, Questions" thread. Where do I go to start a bug report? Thanks very much.

06-03-2012, 10:09 PM	#5
Mi3ke Junior Member Posts: 3 Karma: 10 Join Date: Jun 2012 Device: Nook	It seems you get that error if you've downloaded the latest update, told it to go ahead and do its thing, But have not actually restarted the computer to seal the deal. My books now seem to be opening as before. Sorry for the hoorah !