I have over 1400 small transactions in my wallet that add up to a little over 0.2 BTC. I am trying to send them, but keep getting a transaction too large error. I have tried to set a custom transaction fee, but am unable to still send. I am using Bitcoin core v0.10 on Windows. I have looked at this thread but am still unable to find a solution.
Your scriptSig is too big! It is limited to 200 kbytes, and you've got 1400 inputs @ 0.2kbyte (best case scenario):
1400x 200 = 280kbyte.
Try using half the inputs (preferably newer inputs) to cut the scriptSig down in size.