I have been trying to install the matrixio-xc3sprog package using sudo apt install matrixio-xc3sprog but I receive the following error:
E: Failed to fetch https://apt.matrix.one/raspbian/pool/m/ma/matrixio-xc3sprog_raspbian-jessie-1.1.1_armhf.deb Size mismatch
I am using a fresh install of raspbian jessie on a raspberry pi 3. I have done apt-get clean, apt-get update, restarted, but I still have this issue. The other packages, such as matrixio-openocd, install with no problems.