Failed to create empty document error message

I am receiving the following error message with FlashGet software.
I usually download huge data from websites and in order to split the data and download each simultaneously is use this software.
This helps in increasing the download speed also.
Until yesterday everything was working fine on my machine.
But today when I open any of my files it comes up with:
Failed to Create Empty document.
I have my Antivirus updated and the scan does not come up with any error message.
I have downloaded and installed the latest windows updates and the latest Service pack for Windows XP SP3 machine.
Please help me with this issue .
