I've had deployment issues before. If you have the issue with dozens of other computers besides the one mentioned here, disregard this workaround.
Simply Remote Desktop into the server and share your CD Drive containing the BESR software. Run the BESR setup program and manually install the client. Since it's one machine if I get your message right, it may not be worth troubleshooting an issue only affecting one computer.
Now...................as for the notification issue, is this related to your e-mail SMTP settings? If it is, I'm surprised BESR is halting on that. What I've personally found to be related to issues like yours is having improper security credentials on the server your deploying to. You may need to provide either Domain Admin or Local Admin credentials to get it working right.