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POSystem.ArgumentException: Parameter is not valid
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copied!<p>I have a page that sends html5 canvas data, encoded as a base64 bmp image (using this algorithm <a href="http://devpro.it/code/216.html" rel="noreferrer">http://devpro.it/code/216.html</a>) to a serverside process that converts it into a System.Drawing.Image object and does some operations on it.</p> <p>In my local environment, this works just fine, but on my ec2 instance I get the following error:</p> <blockquote> <p>System.ArgumentException: Parameter is not valid. at System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateImageData) at System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement)</p> </blockquote> <p>My code looks as follows:</p> <pre><code>System.Drawing.Image image = null; string b64string = "..."; byte[] sf = Convert.FromBase64String(b64string ); using (MemoryStream s = new MemoryStream(sf, 0, sf.Length)) { image = System.Drawing.Image.FromStream(s, false); } ... </code></pre> <p>Here's a text file with a sample b64string that I'm using to test: <a href="https://docs.google.com/leaf?id=0BzVLGmig1YZ3MTM0ODBiNjItNzk4Yi00MzI5LWI5ZWMtMzU1OThlNWEyMTU5&hl=en_US" rel="noreferrer">https://docs.google.com/leaf?id=0BzVLGmig1YZ3MTM0ODBiNjItNzk4Yi00MzI5LWI5ZWMtMzU1OThlNWEyMTU5&hl=en_US</a></p> <p>I've also tried the following and had the same results:</p> <pre><code>System.Drawing.ImageConverter converter = new System.Drawing.ImageConverter(); image = converter.ConvertFrom(sf) as System.Drawing.Image; </code></pre> <p>Any insight would be greatly appreciated!</p>

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