Does anyone know of any workaround for this?
I'm trying to upload .jpg and .png files, both file types allowed in standard Wordpress settings, but I get the above error.
The workarounds I've googled so far don't work as Wordpress no longer sees the files i'm uploading as images. These are the plugin: Disable Real Mime Check, and variations of code that allow unfiltered uploads in the functions.php file.
I'm sometimes able to get my images uploaded but mostly not, and I can't see a pattern to which images get uploaded and which don't.
Any advice?
You can try editing the wp-config.php file and adding in;
This will allow you to then upload forbidden files, however as a precaution once uploaded I would delete this edit.