Error when trying to compile Alloy project

I got the following error when trying to compile Alloy project

[INFO] :   style:      "._footer.tss"
[ERROR] :  Error processing style "/Users/SCN/Documents/Workspace/Titanium/CRMOBILE/app/styles/._footer.tss"
[ERROR] :  Expected "}", bare word, comment, end of line, string or whitespace but "%uFFFD" found.
[ERROR] :  
[ERROR] :  - line:    2
[ERROR] :  - column:  1
[ERROR] :  - offset:  2
[ERROR] :  Alloy compiler failed