Can you open it with another image viewer, like Irfanview or XnView and export it as a PNG or something lossless and continue wotking?

One thing I learned a while back with the same problem (only in GIMP), is to always make two copies X.X

can it open WPE format?

Irfanview is the best image viewing program I've seen - it's very small to install and can open just about anything. Worth a shot.

just checked, doesnt open it.

WPE isn't an image file format, its a stroke recording format that OpenCanvas uses.

Oh, gotcha - never used OC so I don't know how it works. :P If it's browser-based, can you go back in the history and take a capture of it?

Hmmmm, my Linux version of XnView won't open them either. Maybe the Windows one does?

send it to heavyblues0@gmail.com, and I'lls ee what I can do.
I love to help out a fellow artist in need :3

Send it to norithics@gmail.com, and I'll attempt to get it.

OpenOffice can open many things. Worth a shot, even though I can't find any documentation of it.

send it to raidercz[at]yahoo.com I'll see what I can do.

If OpenCanvas is anything like ShiPainter (same programmers), the file is probably a standard GunZip archive that's been truncated. I doubt it will be recoverable.

Still, you can try this: take a copy of the file, add a ".gz" file extension to it, and try to use a compression program that supports GunZip (like WinZip) to decompress it. Maybe it's not really truncated. It might just have a messed-up header.

I have a lot of experience with oekaki applets, so maybe I could do something with it. (waccoon@ninechime.com)

OC was made by PortalGraphics, and I believe the event file is a series of strokes -- are you referring to similarities to ShiPainter's PCE (paintchat event) file format? I wasn't aware it was compressed .... is there any useful data inside the container, though?

Oops. No, I totally confused PaintChat with OpenCanvas.

PaintChat uses the PCH format for events, regardless of the file extension (they are played by the PCHViewer). There are two versions of the PCH format, one that is GZ compressed with the header "6B 00"h, and one with no header, key/value initializers, followed by raw GZ data. When the data is decompressed, events use two words each. It's pretty simple, though the lack of proper headers makes identifying the data difficult.

The WPE file is similar in structure, but not compressed at all. However, several other OC event files have the header "00 02 58 02"h, and Mif Maf's file doesn't match. So, either this file was made with an unusual version of the program, or the file really is corrupt. I downloaded OpenCanvas v4 to create some control files, but it apparently doesn't save the WPE format, anymore. It uses a newer OE4 format, which has a different header followed by compressed data. The company doesn't offer older versions of OC for download, so I don't think there's much more I can do.

well, OC3 is still floating around cause it doesn't phone home, hint hint ;)

I'll give it a shot. I use a much older version of oc, it might be less picky. carnyfox[at]yahoo.com

With enough people fiddling with it hopefully some progress will happen. berrykitty[at]gmail.com

I'll take a crack at it.

pimp.my.canvas {at} pixelechoes.net

I should go reverse engineer the WPE format someday, unless there's documents of if everywhere. I was planning to make a oC clone and probably would share some combitality.

The WPE format that oC uses seems to be spefic for oC. :/

If people manage to recover it, don't be surprised if the picture might look half-broken. But I suppose that's preferable over starting from scratch.

Hey now, have some faith. I'm doing the ebst I can, I jsut had to sleep.

i've had this issue come up before, and i'm afraid the data really is gone. check the file size, more than likely it's only a couple hundred KB. if this is the case, then i'm afraid all you can do is learn from this experience.
what i've learned to do is make periodic saves, incriminting the filename so that i dont' save over the previous save. so my files look like this:
2006-08-17a_(picture subject).wpe
this way, worst case scenario, i only have to go back a step or few instead of losing the whole picture and ALL of my work.

Actually the file itself is full size, 1mb. So the data is most likely partially intact.

But yeah I've learned my lesson, periodic saves all the way. Never again will i save when i exit.

*huggles warmly* i'm sorry such a lesson had to be learned like this. it's never a fun thing to have to deal with.
another note i should make is that you can always use the Show-> Quick Save as BMP option just before closing as well.
it's not going to have all the layers, nor will it have the line-history that the wpe event file will have, but it will at least be a snapshot of the picture where you left it. just click the Show menue, and choose the bottom option for that. :)

interesting

I have had the same problem with one of my event files. There is a japanese program out there called WPB2PSD, but unfortunately, the Event file format's completely different. I'm not sure what to tell you unless you're a programmer and want to work out the event file format yourself. There's probably corrupted data in there somewhere that is outside a container and could potentially crash OC, so the programmers chose to stop loading the file rather than risk it.

My only other suggestion is to try a different version of OC to open it. The more different, the better. (OpenCanvas3 or oC b68 maybe)

I've had this problem too. Always seems to happen when you draw the one -good- picture..

I've no idea how to recover it though ;-;