Enhanced driver signing beginning with ver 6.60 of InstaCal / Universal Library
Beginning with InstaCal / Universal Library version 6.60, MCC has enhanced its driver signing (SHA-256). If you are installing on Win7-32 or Win7-64, and if your Windows 7 is not up-to-date, we recommend that you fully run Windows Update prior to installation. Attention Vista-64 users: Vista-64 cannot verify the new drivers, and since disabling driver verification is only possible temporarily (invalid after each reboot), we recommend that you either install an older version of InstaCal/UL (namely 6.55), or migrate to a newer Windows version.
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