problem saving png error (Hex 0xBFF604A5) File not found.

[drummerguy]

Does anyone have some insight into how to correctly save a .png file that I grabbed from an IMAQ image?  I've been trying to use IMAQ write file 2.vi, but it doesn't seem to be able to create a file.  My code works fine if I pass it an existing .png file to write to, but it chokes once I tell it to save the image to a non-existing file.  I'm not very familiar with the IMAQ file I/O, but I assumed (wrongly) that it would work the same as the normal Open/Close file vi's that you can give write/replace/create permission to.  I attached my vi (sorry it's kind of a mess at this point).  Any suggestions?  Thanks,

John

[Samuel_S]

drummerguy-

We have encountered this problem before. Typically the solution is checking the permissions.

-The most common reason is if you don't have 'write' privileges in the folder you are trying to write to. 
*If are unsure about this, you can check by trying to create a new file manually through windows explorer in the directory that LabVIEW is trying to write a file to. If you can create a file there, but LabVIEW cannot, then we can try something else. 

-Another possible reason is if you have any illegal characters in your filename such as "%, /, \" 
*A good filename would be something like "C:\test\test.png" for PNG files. If you are writing to a specific file type, could you try to write to a different type (JPEG, PNG, TIFF, BMP) and see if you get the same results?

I would try these things first and see it your problem persists. I hope this works for you

[drummerguy]

Thanks for the response.  I was actually able to find the problem on my own - I had mistakenly used a file path to array conversion sub vi to turn the directory into a string.  Switching to a file path to string conversion subvi fixed the problem.

[Samuel_S]

Awesome!! Im glad you got it all taken care of