Test takers who typed the essays on the New York state bar examination into their laptop computers this week experienced problems saving their work and uploading the files for transfer to graders, the chair of the Board of Law Examiners acknowledged Wednesday.

The board suspects that a flaw in the Secure Exam software provided to test takers by Software Secure Inc. is responsible for the computer glitches, said Diane Bosse, chairwoman of the Board of Law Examiners. Even as the board was administering the second day of the two-day bar exam Wednesday, officials were trying to determine how many test takers were affected by the software problems and whether any of their essays would be lost.