Calibre 0.9.29 won't connect with Calibre Companion

[K8HW]

I just upgraded to Calibre 0.9.29 and find that Calibre Companion will no longer connect. Here is the error:

calibre, version 0.9.29
ERROR: Error: Error communicating with device

Assigning to this object is forbidden

Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 85, in run
File "site-packages\calibre\gui2\device.py", line 470, in _books
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 49, in _synchronizer
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 1043, in books
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 716, in _set_known_metadata
File "site-packages\calibre\ebooks\metadata\book\base.py", line 182, in deepcopy
File "copy.py", line 163, in deepcopy
File "copy.py", line 257, in _deepcopy_dict
File "copy.py", line 190, in deepcopy
File "copy.py", line 334, in _reconstruct
File "copy.py", line 163, in deepcopy
File "copy.py", line 257, in _deepcopy_dict
File "copy.py", line 190, in deepcopy
File "copy.py", line 358, in _reconstruct
File "site-packages\calibre\library\field_metadata.py", line 427, in __setitem__
AttributeError: Assigning to this object is forbidden

Here is the error log:

calibre Debug log
calibre 0.9.29 Portable isfrozen: True is64bit: False
Windows-Vista-6.0.6002-SP2 Windows ('32bit', 'WindowsPE')
('Windows', 'Vista', '6.0.6002')
Python 2.7.3
Windows: ('Vista', '6.0.6002', 'SP2', 'Multiprocessor Free')
Starting up...
Started up in 28.06 seconds with 1630 books
SMART_DEV ( 0.02: 0.017) _attach_to_port try ip address "" on port 9090
SMART_DEV ( 2.07: 0.810) startup_on_demand listening on port 9090
SMART_DEV ( 2.52: 0.010) _attach_to_port try ip address "" on port 54982
SMART_DEV ( 2.98: 0.000) startup_on_demand broadcast socket listening on port 54982
SMART_DEV ( 4.43: 1.009) run All IP addresses {'{C328FED4-6A85-11DB-9FBD-806E6F6E6963}': [{'broadcast': '127.255.255.255', 'netmask': '255.0.0.0', 'addr': '127.0.0.1'}], '{359343B6-A71B-4780-B7D0-2AE4A7C42E68}': [{'broadcast': '192.168.1.255', 'netmask': '255.255.255.0', 'addr': '192.168.1.70'}]}
SMART_DEV ( 9.52: 5.009) run received broadcast ('localhost', ('192.168.1.71', 54982)) calibre wireless device client (on Mr-Bill);8080,9090
SMART_DEV ( 12.61: 3.000) run attempt to open device socket
SMART_DEV ( 13.67: 0.977) reset
SMART_DEV ( 13.83: 0.000) set_progress_reporter
SMART_DEV ( 14.03: 0.000) open
SMART_DEV ( 14.25: 0.021) _call_client GET_INITIALIZATION_INFO wfr True
SMART_DEV ( 14.73: 0.296) open App version #: 38
SMART_DEV ( 14.90: 0.000) open Device can stream books True
SMART_DEV ( 15.10: 0.000) open Device can stream metadata True
SMART_DEV ( 15.29: 0.000) open Device can receive book binary True
SMART_DEV ( 15.44: 0.000) open Device can delete multiple books True
SMART_DEV ( 15.60: 0.000) open Client device kind NookColor
SMART_DEV ( 15.77: 0.000) open max_book_packet_len 4096
SMART_DEV ( 15.93: 0.000) open Device wants UUID file names False
SMART_DEV ( 16.21: 0.086) open selected formats [u'epub', u'mobi', u'pdf']
SMART_DEV ( 16.40: 0.000) open extension path lengths {u'pdf': 30, u'mobi': 30, u'epub': 30}
SMART_DEV ( 16.56: 0.000) open cover height 160
SMART_DEV ( 16.72: 0.002) card_prefix
SMART_DEV ( 17.96: 0.968) set_progress_reporter
Job: 1 Get device information started
SMART_DEV ( 18.34: 0.000) get_device_information
SMART_DEV ( 18.84: 0.013) _call_client GET_DEVICE_INFORMATION wfr True
SMART_DEV ( 19.66: 0.357) _call_client SET_CALIBRE_DEVICE_INFO wfr True
SMART_DEV ( 20.26: 0.414) card_prefix
SMART_DEV ( 20.42: 0.001) free_space
SMART_DEV ( 20.59: 0.008) _call_client FREE_SPACE wfr True
DeviceJob: 1 Get device information done, calling callback
DeviceJob: 1 Get device information callback returned
SMART_DEV ( 21.20: 0.415) set_progress_reporter
Job: 2 Get list of books on device started
SMART_DEV ( 21.50: 0.000) books None
SMART_DEV ( 21.91: 0.022) _call_client GET_BOOK_COUNT wfr True
Job: 1 Get device information finished
No details available.
SMART_DEV ( 28.15: 5.728) books getting book metadata. Done 0 of 1597
DeviceJob: 2 Get list of books on device done, calling callback
Assigning to this object is forbidden

Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 85, in run
File "site-packages\calibre\gui2\device.py", line 470, in _books
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 49, in _synchronizer
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 1043, in books
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 716, in _set_known_metadata
File "site-packages\calibre\ebooks\metadata\book\base.py", line 182, in deepcopy
File "copy.py", line 163, in deepcopy
File "copy.py", line 257, in _deepcopy_dict
File "copy.py", line 190, in deepcopy
File "copy.py", line 334, in _reconstruct
File "copy.py", line 163, in deepcopy
File "copy.py", line 257, in _deepcopy_dict
File "copy.py", line 190, in deepcopy
File "copy.py", line 358, in _reconstruct
File "site-packages\calibre\library\field_metadata.py", line 427, in __setitem__
AttributeError: Assigning to this object is forbidden

DeviceJob: 2 Get list of books on device callback returned
SMART_DEV ( 28.57: 0.245) _call_client NOOP wfr True
Job: 2 Get list of books on device finished
Assigning to this object is forbidden

Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 85, in run
File "site-packages\calibre\gui2\device.py", line 470, in _books
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 49, in _synchronizer
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 1043, in books
File "site-packages\calibre\devices\smart_device_app\driver.p y", line 716, in _set_known_metadata
File "site-packages\calibre\ebooks\metadata\book\base.py", line 182, in deepcopy
File "copy.py", line 163, in deepcopy
File "copy.py", line 257, in _deepcopy_dict
File "copy.py", line 190, in deepcopy
File "copy.py", line 334, in _reconstruct
File "copy.py", line 163, in deepcopy
File "copy.py", line 257, in _deepcopy_dict
File "copy.py", line 190, in deepcopy
File "copy.py", line 358, in _reconstruct
File "site-packages\calibre\library\field_metadata.py", line 427, in __setitem__
AttributeError: Assigning to this object is forbidden

SMART_DEV ( 30.97: 2.047) _call_client NOOP wfr True
SMART_DEV ( 33.21: 2.045) _call_client NOOP wfr True
SMART_DEV ( 35.47: 2.045) _call_client NOOP wfr True
SMART_DEV ( 37.73: 2.053) _call_client NOOP wfr True
SMART_DEV ( 40.31: 2.175) _call_client NOOP wfr True
SMART_DEV ( 42.78: 2.134) _call_client NOOP wfr True
SMART_DEV ( 45.36: 2.341) _call_client NOOP wfr True
SMART_DEV ( 48.20: 2.041) _call_client NOOP wfr True
SMART_DEV ( 50.73: 2.327) _call_client NOOP wfr True
SMART_DEV ( 53.25: 2.048) _call_client NOOP wfr True
SMART_DEV ( 55.48: 2.044) _call_client NOOP wfr True
SMART_DEV ( 55.67: 0.003) _send_byte_string socket error [Errno 10054] An existing connection was forcibly closed by the remote host 10054
SMART_DEV ( 55.88: 0.000) _call_client device went away
SMART_DEV ( 56.08: 0.000) post_yank_cleanup
READING LIST: Device disconnected

I downgraded to version 0.9.28 of Calibre and everything works just fine. Any help with this would be greatly appreciated.

~Dave

[kovidgoyal]

https://bugs.launchpad.net/calibre/+bug/1176314

[K8HW]

Thanks for your quick reply Kovid!

[theducks]

Interesting Side effect.

I previously had the K4NT side connected.
When I started the Wireless server, and received that error message (I cleared):
Calibre showed a device connected.
When I switched to Device, I saw the books that were on the K4NT that had been previously attached.

[Skydog]

Thanks for fixing this.

[theducks]

A re-download and install now Works

[Skydog]

Originally Posted by theducks

A re-download and install now Works

Thanks for that!

[Madmik]

I am terribly sorry, but issue is not fixed completely - I have 0.9.30 (both 32bit and 64 bit versions on Win 7) - 64 bit version still displays communication error, 32 but version connects after few attempts and takes forever to synch (metadata is being sent back and forth between Calibre and Companion...). Kindly take a deeper look on what happened.

[chaley]

Originally Posted by Madmik

I am terribly sorry, but issue is not fixed completely - I have 0.9.30 (both 32bit and 64 bit versions on Win 7) - 64 bit version still displays communication error, 32 but version connects after few attempts and takes forever to synch (metadata is being sent back and forth between Calibre and Companion...). Kindly take a deeper look on what happened.

One thread is enough. See my answer in https://www.mobileread.com/forums/sho...76#post2511876.