We cannot know what is the cause of this problem, just from your description.

the steps to find the cause would be: a. Make sure you have the latest version of the software. (compare to the version in the download section of epidata.dk ) b. Start your system with one related file c. Supposing point b went right add one add at time until the error occurs. d. Tell us on the list of the specific contents of the file giving problems

regards Jens Lauritsen

Hello, I created a data entry system for a project which includes five relational databases. When we open EpiData and choose "enter data" all of the screens open, but we get the following message: Access violation at address 00464077. Write of address 0000000C I will appreciate any help I can get on this issue. Thanks,Regina Harders