It appears developers have used different methods to get around this problem. You will have to do some research to find a solution that works for your setup.
The forum post I gave a link to includes some advice. Some one said to avoid using the statement:
UsePNGImageDecoder()
in your code.
Someone else posted what looks like PureBasic code for a program that modifies an executables size and crc checksum to help it pass common virus scans.
I don’t use PureBasic so I can only be of limited help here but if you read the forum thread I posted and search the PureBasic forums for other threads on this topic you may find a solution that works for you.