I am having difficulty in working in CorelDRAW 9

I'm working with CorelDraw 9. I worked on projecting for two months, size is 987 KB. Just time
when I finished my project, there was a file corruption. You get to
40%, then I get the message "Error reading myfile.cdr ".
I tried to copy it to a new CDR, nopolicy only 74% , then immediately got the error message, which
they say that it is impossible to copy a blank document, although I can see it in the window
preview.
I need a Corel programmer that would likely open the file and fix the problem.
Can you help me?