"The image is too large"

I was having the same issue using TinyMCE. I went into my public_html folder and found my php.ini file. In that file, I was able to find this:

upload_max_filesize = 2M

I changed it to

upload_max_filesize = 12M

Now it works :)

I don't believe it matters about dimensions if your file size is too large.

Actually this issue is related to file.inc of core. The code is:

if (image_get_toolkit() && image_scale($file->filepath, $file->filepath, $width, $height)) {
......
}
else {
$errors[] = t('The image is too large; the maximum dimensions are %dimensions pixels.', array('%dimensions' => $maximum_dimensions));
}


According to this piece of code you probably have a problem with your image toolkit because it is either missing or it's not capable of scaling images.

I had the same problem when I tried to upload a picture of about 100px width and 30kb of size as user 1. I reviewed the settings and found that the maximum dimensions were set to "1000x" (without a value for the height). Setting it to "1000x1000" or 0 solved the problem for me.

I had a similar problem. I discovered it was caused because I had used a capital letter "X" in an imageCache setting (ImageCache_Profiles) for a dimensions dialogue.
So, I had "1600X1400" in the maximum settings dialogue rather than "1600x1400". When I changed the cap to lower case, the error went away. That was on a Linux Apache server. Case matters.

This is probably due to incorrect value set for Maximum resolution.