Ensure that you have the correct service pack for 64-bit Windows XP Professional.
Installation Guide Sybase IQ InfoPrimer 15.3 > Planning Your Installation > System Requirements > Sybase IQ InfoPrimer Development and Installation Guide Sybase IQ InfoPrimer 15.3 > Planning Your Installation > System Requirements > Sybase IQ InfoPrimer Server state that IQ InfoPrimer Development and IQ InfoPrimer Server support 64-bit Windows XP Professional with Service Pack 3. There is no Service Pack 3 for 64-bit Windows XP Professional. IQ InfoPrimer Development and IQ InfoPrimer Server support 64-bit Windows XP Professional with Service Pack 2.