Not enough memory

Hi Donna, 
I noticed you contacted our support. May I ask you whether the issue was solved? 
Thanks

AVG Antivirus Free 
Displays this message.
You are not fully protected!
Update Manager: Not enough memory.
Wht does this mean and how do I fix this?

Hi Donna, 
I noticed you contacted our support. May I ask you whether the issue was solved? 
Thanks