When I try and start all the routers (one-by-one) in my Internetworkexpert CCIE R&S lab, GNS3 crashes with the info below. I can always strat 11 devices but when I try to start the 12th it crashes. Any ideas will be much appreciated. I thought that the INE study material would be compatible as I've paid for it?

Dynagen management console for Dynamips (adapted for GNS3)
Copyright (c) 2008 GNS3 Project

=> Local working directory /Applications/Dynagen/sample_labs/internetworkexpert/working cannot be found for hypervisor localhost:7200, use working directory C:\Users\NJWHIT~1\AppData\Local\Temp instead
Local IOS image /Applications/Dynagen/images/c3725-adventerprisek9-mz.124-15.T10.extracted.bin cannot be found for hypervisor localhost:7200, use image C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\IOS\c3725-adventerprisek9-mz.124-15.T12.bin instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/R1.initial.config.gns3.cfg cannot be found for router ROUTER R1, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\R1.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/R2.initial.config.gns3.cfg cannot be found for router ROUTER R2, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\R2.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/R3.initial.config.gns3.cfg cannot be found for router ROUTER R3, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\R3.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/R4.initial.config.gns3.cfg cannot be found for router ROUTER R4, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\R4.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/R5.initial.config.gns3.cfg cannot be found for router ROUTER R5, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\R5.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/R6.initial.config.gns3.cfg cannot be found for router ROUTER R6, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\R6.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/SW1.initial.config.gns3.cfg cannot be found for router ROUTER SW1, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\SW1.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/SW2.initial.config.gns3.cfg cannot be found for router ROUTER SW2, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\SW2.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/SW3.initial.config.gns3.cfg cannot be found for router ROUTER SW3, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\SW3.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/SW4.initial.config.gns3.cfg cannot be found for router ROUTER SW4, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\SW4.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/BB1.initial.config.gns3.cfg cannot be found for router ROUTER BB1, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\BB1.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/BB2.initial.config.gns3.cfg cannot be found for router ROUTER BB2, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\BB2.initial.config.gns3.cfg instead
Local configuration /Applications/Dynagen/sample_labs/internetworkexpert/initial.configs/BB3.initial.config.gns3.cfg cannot be found for router ROUTER BB3, use configuration C:\Users\njwhitworth\Cisco Documentation\CCIE\Study Guides\Practice Labs\Lab Intro\initial.configs\BB3.initial.config.gns3.cfg instead
Error: could not communicate with dynamips server localhost
It may have crashed. Check the dynamips server output.
Exiting...
Error: lost communication with dynamips server localhost
It may have crashed. Check the dynamips server output.
Exiting...
Error: lost communication with dynamips server localhost
It may have crashed. Check the dynamips server output.
Exiting...
Error: lost communication with dynamips server localhost
It may have crashed. Check the dynamips server output.
Exiting...
Error: lost communication with dynamips server localhost
It may have crashed. Check the dynamips server output.
Exiting...

Hey,
I got the same problem and I did fix it by cleaning my disk, looks like when its full there is no enough virtual memory to allow GNS to continue working

If u r running out of ram, u can adjust the memory to borrow from the hard drive.

Make sure u have ram set in gns3 at edit, ios images, default ram.

also make sure when u r setting up gns3, that u start 1 router at a time with ur windows task mgr up (ctrl+shift+esc) and also do a show proc cpu on the router after u console to it.

when the proc on the router calms down, right click on it in gns3 and run the idle pc and choose the option with the *.