PC blocked when executing option Data Export/Impor

When executing the option of Data Export/Import from to another system, in this case of Excel 97, using template created in axapta. The import process stops, I know this when immovable icon transfer in the green arrow of execution of data transfer is stoped. It only transfers up to 296 registries and the computer blocks itself, I must matter in groups smaller to 296 registries. Some aid? Axapta 3.0 using AOS Thin client, SQL Database Thanks alberto_bello@hotmail.com