Cannot open 8.8gb exe pgp file. Is there a solution?

Using a temporary trial of pgp encryption some time ago in Windows 7 64bit I created an exe file of 8.82gb containing several mp4 files. During encryption the menu warned that the file was too large but that a "small helper file" would be created to enable decryption even though the final file would be larger than the normal limit. No small file was created and the .exe encrypted file cannot be decrypted. Is there any software that will resolve this problem? Is there any procedure to enable decryption?