Firstly, I suggest you go to Start, type chkdsk.exe and run the utility. After the scanning process is complete reboot your computer and try to open your file. If you can't, uninstall the BanglaWord software, run a registry cleaner and install it again. If it doesn't help, I suggest you contact the support team using
0870 931 3441 phone number or the form from the official web page.