Sorry I didn't get back (having DNS problems myself).
As you still have all the files, allbeit in the wrong order, they are safe.
How many pages are there?
I downloaded the Viewer but as I don't have any .max files, I couldn't check it out.
Is there no options to change the order of the files in the software.
The folder with the .max files in, are the files showing as individual items?
If so, you could try renaming each one in turn with a number after its name. Number the first file ( page 1) and the next in order (Page 2)
Once done the folder should arrange then in numerical order, or right click a blank space in the folder and select arrange icons and select Auto Arrange and also Name.
What scanner software did you use to scan them originally?
If you don't hav ethe book to do another scan with different software, it may be worth printing the files off and scanning them again in the correct order.
dave