Old code, new application, finally attempting an upgrade to XP and LabVIEW 7.1.1, with NI-DAQ 7.3.1. Has there been any issues with LabVIEW 7.1.1 Professional Development suite and the application builder or with PCI-MIO- and SCXI harware? Issues we found in past DAQ upgrades with support file additions when using NT. The application has an Acquisition VI that does calibration and averaging then to a global and then to main application for further crunching, much like VI logger. Any advice on the 7.1.1 mass compile requirement would also be helpful.