Yes, there have been reports that apps linked to libcrypto.0.9.7 are experiencing issues with verifying the new receipts in the Mac App Store. It appears that this version of libcrypto does not support the sha256WithRSAEncryption algorithm used in the new receipts. Apps linked to libcrypto.0.9.8 or CommonCrypto are not affected and can launch successfully after redownloading the receipts.