The client data file (client.wyc) failed to open.

I don't know there's not enough information. Based on the very limited information you posted I would guess the file paths are too long. Try it again on a shorter path.

If you give me much more information I'll be able to give you better help.

Sorry, I wasn't aware what information was required.

It works locally, when I build and run it.

When I publish it, install it and run it, I get the error.

It seems like the files are being compiled, or extracted into the correct location.

What information do you need sir.

If it's working when you're testing then 1 of 2 things is happening:

1. Not all the files are being copied (or the files are being modified).

Or, like I said...

2. The deployment path is too long. Try a shorter path (move all the files to a much shorter path) and try the process again.

How do I check all files are being copies?And the path doesn't seem to be long at all, but how do I modify that? (VB)

Ok, I've managed to sort that!

Regarding the updates, I only want it to update 2 files, a text file that is in resources, and the form1.vb file.

What I want it to do is on startup check if "C:\List\data.txt" exists, if not create it, if it does, ignore. Then running the updater would replace "data.txt" with a newer version with all the current data. As at the moment all the updater seems to do is corrupt it. Is this feasible to do?

WyBuild compares versions of your software and generates the smallest possible patch. It assumes the files are static (meaning the customer doesn't mess with them). If the customer does mess with them then the catch-all updates is installed.

Long story short: For user touched files, exclude them from wyBuild.