is the error stating that the pic your trying to upload is to big of a file. or something like "exceeds the file limit" thats the main problem i always had with it. i had to use my photo edit stuff on my computer and save a resized smaller version of the pic before i could upload it. i use tinypic.com to put the pics in the fourms. in the gallery i just browse my computer for the pic i want after i resized it and click upload.
sorry this is giving you grief. it can be a pain sometimes.