Get error message(0x782) when I try to install AVG free

Bob, In future please refrain from carrying out multiple topic postings on the same subject! You won't obtain an answer to your query any faster!. Please see your other posting (https://support.avg.com/answers?id=906b0000000DXs8AAG).
AVG Guru

Bob, In future please refrain from carrying out multiple topic postings on the same subject! You won't obtain an answer to your query any faster!. Please see your other posting (https://support.avg.com/answers?id=906b0000000DXs8AAG).
AVG Guru

what do I need to do?