If you had kept the monoscript folder you can see what reference scripts are being referenced and use those to recompile the project file.
The scripts are contained within the Assembly-CSharp.dll,, , and. so delete or move it out of the project folder and restart unity. you will get all the assets plus a monoscript resource file which is a symbolic link to the actual scripts but will usually crash the unity compiler. you will have to use * in the file selector, but you will be able to import the whole cab file.
11 Months and no honest answer? Anyway, use the unpackassets editor extension to import the *.cab file.
