I was hoping someone could help me with the following problem. I 've many times in vain when converting prc to epub. This is the first time I use calibre so I may miss something ? Any help would be very much appreciated.
calibre, version 1.22.0
ERROR: Unhandled exception: <b>error</b>

123, 'CreateFile', 'The filename, directory name, or volume label syntax is incorrect.')
calibre 1.22 [64bit] isfrozen: True is64bit: True
Windows-7-6.1.7601-SP1 Windows ('64bit', 'WindowsPE')
('Windows', '7', '6.1.7601')
Python 2.7.5
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Traceback (most recent call last):
File "site-packages\calibre\gui2\convert\single.py", line 278, in accept
File "site-packages\calibre\gui2\convert\metadata.py", line 236, in commit
File "site-packages\calibre\db\legacy.py", line 465, in set_metadata
File "site-packages\calibre\db\cache.py", line 57, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 1149, in set_metadata
File "site-packages\calibre\db\cache.py", line 1144, in set_field
File "site-packages\calibre\db\cache.py", line 945, in set_field
File "site-packages\calibre\db\backend.py", line 1357, in windows_check_if_files_in_use
File "site-packages\calibre\utils\filenames.py", line 348, in __init__
error: (123, 'CreateFile', 'The filename, directory name, or volume label syntax is incorrect.')