Exhibit 23.1 - Consent of Ernst & Young LLP Consent of Independent Auditors We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-48383) pertaining to the 1985 and 1995 Stock Option Plans of STV Group, Incorporated, of our report dated October 29, 1999 with respect to the consolidated financial statements of STV Group, Incorporated and Subsidiaries, included in the Annual Report (Form 10-K) for the fiscal year ended September 30, 1999. /s/ Ernst & Young LLP Harrisburg, Pennsylvania December 23, 1999