[Old Thread] Strange Calibre portable Issue

[Syx]

Hello,
i have a strange issue in Calibre portable > 0.9.0, in 0.8.x i don't have the problem.

Context :
i use Calibre for manage my comcis/bs/manga collection, when i import a new comix the first image became the cover.
My calibre installation are placed on my NAS and i execute calibre from my cifs share.

extension type : pdf, cbr and cbz

Problem :
if i add a new book just after upgrade the cover generation i ok. but if i close Calibre and re-execute then the generation of cover failed. (and the fix cover in edit metadata don't work too).
in debug mode i have this error :
calibre Journal de débogage
calibre 0.9.3 Portable
Windows-7-6.1.7601-SP1 Windows
('Windows', '7', '6.1.7601')
Python 2.7.3
Windows: ('7', '6.1.7601', 'SP1', 'Multiprocessor Free')
Starting up...
Key u'A' for shortcut Ajouter des fichiers aux références de livres selectionnées is already used by Ajouter des livres, ignoring
Key u'F3' for shortcut Aller à l’article précédent is already used by Aller à la prochaine correspondance, ignoring
Key u'Alt+T' for shortcut Basculer Navigateur d’étiquettes is already used by Livres avec les mêmes étiquettes, ignoring
Key u'Ctrl+F' for shortcut Lancer la recherche is already used by Recherche avancée, ignoring
Key u'Alt+S' for shortcut Lancer la recherche is already used by Livres dans cette série, ignoring
Started up in 23.78 seconds with 3595 books
Worker Launch took: 0.34299993515
Job: 1 Read metadata (0 of 1) finished
Read metadata (0 of 1)

Traceback (most recent call last):
File "site-packages\calibre\library\database2.py", line 3362, in create_book_entry
File "site-packages\calibre\library\database2.py", line 1169, in set_cover
File "site-packages\calibre\utils\magick\draw.py", line 71, in save_cover_data_to
File "site-packages\calibre\utils\magick\draw.py", line 20, in _data_to_image
File "site-packages\calibre\utils\magick\__init__.py", line 132, in load
Exception: no decode delegate for this image format `' @ error/blob.c/BlobToImage/360
Added 1234 to db in: 6.39600014687 seconds

if i re-install Calibre the first execution work but all other don't generate cover ... is really strange
Someone have the same problem ? and maybe a solution ?

thanks (and sorry for horrible English )

[Syx]

i investigate and i found a workaround : add Dlls folder to the path and Calibre and include tools get the good dll (ie: imagemagick).

but i don't know why calibre 0.8.X working fine without this workaround ...

[rdahljr]

Can you be specific, what path did you add the dlls to and which DLLs did you add?

Thanks

[BostonPeng]

I'd like to get the answer to this one as well. I fell in love with Calibre as my ebook reader back when I was a Linux user but that laptop died so I'm having to run Calibre portable on a laptop from my local library. This glitch is keeping me from creating covers for some ebooks I can't find covers for anywhere.

[theducks]

Originally Posted by BostonPeng

I'd like to get the answer to this one as well. I fell in love with Calibre as my ebook reader back when I was a Linux user but that laptop died so I'm having to run Calibre portable on a laptop from my local library. This glitch is keeping me from creating covers for some ebooks I can't find covers for anywhere.

This is a really old thread and you told us nothing useful to allow help.
What version Calibre?

Public Library computers may be somewhat locked down.

Post the EXACT (as in copy/paste) error message you get

[BostonPeng]

Originally Posted by theducks

This is a really old thread and you told us nothing useful to allow help.
What version Calibre?

Public Library computers may be somewhat locked down.

Post the EXACT (as in copy/paste) error message you get

Sorry, I had a brain cramp and didn't notice the age of the thread. The library laptop's locked down a bit but I can run Calibre Portable with no problem other than this one. I'm running Calibre Portable 1.36.0 and the error message I got was

calibre 1.36 Portable isfrozen: True is64bit: False
Windows-7-6.1.7601-SP1 Windows ('32bit', '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\metadata\basic_widgets.py", line 1037, in generate_cover
  File "site-packages\calibre\ebooks\__init__.py", line 215, in calibre_cover
  File "site-packages\calibre\utils\magick\draw.py", line 265, in create_cover_page
  File "site-packages\calibre\utils\magick\__init__.py", line 135, in load
Exception: no decode delegate for this image format `' @ error/blob.c/BlobToImage/360

I see the files Calibre is looking for and where they should go but I'm at a loss for what I need to download and install.