EXHIBIT 10.24 COMPUTRON SOFTWARE, INC. AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT This Amendment No. 1 to Securities Purchase Agreement (the "Amendment") is made as of January 9, 1998, by and among Computron Software, Inc., a Delaware corporation (the "Company"), with its principal executive offices at 301 Route 17 North, Rutherford, New Jersey 07070, and the investors listed on the signature pages hereto (the "Investors"). R E C I T A L S: A. On December 30, 1997, the Company and the Investors entered into a Securities Purchase Agreement (the "Agreement"), which provides the terms and conditions of a purchase of common stock and warrants to purchase common stock of the Company. B. The parties desire to amend the Agreement as set forth herein. A G R E E M E N T: NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto agree as follows: 1. Unless the context otherwise requires, capitalized terms defined in the Agreement shall have such definitions in this Amendment. 2. Effective as of December 31, 1997, Section 5.3 of the Agreement shall be deleted in its entirety. 3. Full Force and Effect. As modified by this Amendment, the Agreement shall continue in full force and effect in accordance with its terms. 4. No Waiver. This Amendment is limited as specified and shall not constitute a modification, acceptance or waiver of any other provision of the Agreement. 5. Governing Law. The validity and interpretation of this Amendment shall be governed by the laws of the State of New York, without giving effect to the conflict of laws principles thereof. 6. Counterparts. This Amendment may be executed in counterparts, each of which shall be deemed an original and which together shall be deemed one Amendment. IN WITNESS WHEREOF, the parties have caused this Amendment to be signed as of the date first written above. "COMPANY" COMPUTRON SOFTWARE, INC. a Delaware corporation By: /s/ Michael R. Jorgensen ---------------------------------- Michael R. Jorgensen Executive Vice President and Chief Financial Officer "INVESTORS" LION INVESTMENTS LIMITED By: /s/ Michael Waldron ---------------------------------- Name: Michael Waldron Title: Director WESTPOOL INVESTMENT TRUST plc By: /s/ Michael Waldron ---------------------------------- Name: Michael Waldron Title: Director THE WEBER FAMILY TRUST DATED 1/6/89 By: /s/ Eugene M. Weber ---------------------------------- Name: Eugene M. Weber Title: Trustee 2 RH CAPITAL ASSOCIATES NUMBER ONE, L.P. By: RH Capital Associates Its: General Partner By: /s/ Robert Horwitz ---------------------------------- Name: Robert Horwitz Title: Sole Proprietor ROBERT HORWITZ /s/ Robert Horwitz --------------------------------------- PAUL SAVIDIS /s/ Paul Savidis --------------------------------------- WPG SOFTWARE FUND, L.P. By: Weiss, Peck & Greer, L.L.C. Its: General Partner By: /s/ Richard Pollack ---------------------------------- Name: Richard Pollack Title: General Counsel and Managing Director WPG INSTITUTIONAL SOFTWARE FUND, L.P. By: Weiss, Peck & Greer, L.L.C. Its: General Partner By: /s/ Richard Pollack ---------------------------------- Name: Richard Pollack Title: General Counsel and Managing Director 3 CA CAPITAL MANAGEMENT LTD. By: Weiss, Peck & Greer, L.L.C. Its: Attorney-in Fact By: /s/ Richard Pollack ---------------------------------- Name: Richard Pollack Title: General Counsel and Managing Director SIPPL MACDONALD VENTURES II, L.P. By: Sippl Macdonald Management, LLC Its: General Partner By: /s/ Jackie Macdonald ---------------------------------- Name: Jackie Macdonald Title: Manager 4