Can't recover data

I recently tried to boot my Acronis 10 rescue CD to recover my system. This is a Windows 7 64-bit system with two internal disks. I have been backing up regularly to an external USB drive. From the CD boot, I select Recover, then choose my archive on the external drive. It prompts me for the archive password, checks the archive, and gives no warnings or errors.

The Data type defaults to "Volumes", and it wants to restore two MBRs and both disks. I click "Change" and choose anything other than the defaults (e.g. one MBR and the corresponding disk, or just one of the MBRs). When I click the OK button, I get an error popup that says an internal error has occurred. I can't cut and paste, so I'll try to type it all here:

Code: 1(0x1)
Lineinfo: 0x89125B0BB6832481;
Message:

Code: 10,551,317(0xA10015)
Lineinfo: 0xB320396ADFE3B37;
Message: Cannot find location

Code: 10,092,549(0x9A0005)
Lineinfo: 0x9A79F20828BC7D6;
Message: GetFileInfo call of FileManager failed

Code: 10,092,549(0x9A0005)
Lineinfo: 0x9A79F20828BC7D6;
Message: GetFileInfo call of FileManager failed

Code: 262,151(0x40007)
Lineinfo: 0x948D543C8805EBE2;
Message: Error occurred while opening the file

Then below is the event code with all the hexadecimal numbers above repeated.

I know the archive is good, because I can read it when running Acronis under Windows 7 normally. Does anyone have any idea what night be going on here?