Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: ePUB File Association Broken - Baffled

14 Jun 2013   #1

Win 7 Professional 64bit
ePUB File Association Broken - Baffled

I have had the EPUB file type associated with 2 programs for a couple of years - Sigil and the Calibre's Ebook-Reader. Sometime in the last day or two I've lost the Calibre Ebook-Reader association

When I use the OpenWith context menu it only lists Sigil. So I browse to the Calibre 2 folder in Program Files and select ebook-viewer.exe - nothing happens.

Then I recall that I have an EPUB extension in firefox, so I browse to the Firefox folder and select firefox.exe - voila its there - right next to Sigil

I can open EPUB files from within Calibre itself via its View function, which fires up - ebook-reader.exe,
I can open EPUB files with ebook-reader.exe via Calibre's Open With plugin,
I can open an EPUB file by dropping it onto the ebook-viewer.exe file, or a shortcut to it

So I am assuming this is a Windows issue and not a Calibre issue

A one stage in 'trying to fix it' I got the error message you see in first attachment. I've also attached an image of the entry for EPUB in HKCR - which looks a bit sparse to me - where are the associations to Firefox and Sigil that I see in the third screen shot.

I did System Restores to Friday, Thursday and Wednesday mornings - made not a scrap of difference, almost certain it was OK on Thursday. And I've un-installed and re-installed Calibre.


Addenda - I think the error message is a Python message, Calibre is written in Python - still baffled

Attached Thumbnails
ePUB File Association Broken - Baffled-capture2.jpg  
Attached Images
ePUB File Association Broken - Baffled-capture.jpg ePUB File Association Broken - Baffled-capture3.jpg 
My System SpecsSystem Spec
14 Jun 2013   #2

Win 7 Professional 64bit

Solved - did something I tell others not to do - ran a registry clean with CCleaner

My System SpecsSystem Spec

 ePUB File Association Broken - Baffled

Thread Tools

Similar help and support threads
Thread Forum
File association problem - baffled
(Win 7 - 64 on my desktop machine) I've been extracting new versions of Irfan View for many yrs now but they now apparently only offer an installable option. I installed ver 4.44, monitoring the install with Regshot 2, and it overwrote all of my custom image file icons. So I built a reg file to...
General Discussion
How can i change .epub file extention back to unkown aplication
haha so today i downloaded a book from the internet, (legal), and i could not open it, cause it said unknown application so i clicked open with and i chose microsoft word 2007. now how do i change it back to unknown application I NEED HELP NOW :P. seriously
General Discussion
Set file association for a file (dds) to Shell Common that execs it!
I accidentally set the default file format for a dds (DirectDraw Surface) to Windows shell common. It tries to execute it but obviously fails giving this error: I've tried everything. Modified registry keys, use slightly different solutions, but I just can't get it working. Does anyone have a fix...
General Discussion
How to view epub file in preview pane
i want to preview epub files in preview pane of windows 7
How do I change a file's file type (not only file association)?
I need to change a zip file to an epub file. I have heard this can be done, but when I add the .epub after the file name, I notice the file is still actually zip type file when I right click properties. This is causing a problem when I try to open it in in different ebook reader programs. I...
General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 11:29.
Twitter Facebook Google+