Yes, this error is common. DSS LITE hardware requirements are below and listed on the website for future reference. Please add additional memory to total 1GB.

Hardware Requirements:
- x86 - compatible PC
- 1 GByte RAM
- CPU (3 GHz Pentium IV or faster are recommended)
- HDD (SATA, SAS, SCSI, ATA) / RAID / Fibre Channel / iSCSI Storage
- Network Interface Card (multicards 1Gb/s recomended for bonding)
- USB-Memory-Stick, USB-DOM (Disk On Module) or "pen drive"

http://www.open-e.com/free