Can not open database after update from v 1 to latest

User 8cb40c7a65

18-11-2008 14:52:53


I just installed the latest version of instant jchem and now I can't open my database (created using version 1). Any quick fix for this?

ChemAxon fa971619eb

18-11-2008 17:02:37

Could you tell me which version you are upgrading from and to (you mention version 1 which is very old)?

And could you send the details of any error messages you get.



User 8cb40c7a65

19-11-2008 09:20:57

I can open the database in v1.0.7 (WinXP)

When I try to open it using v2.3.1 (Mac OS X 10.5.5) the program appears to recognize the project folder as an Instant JChem project but will not open the datatable. There are no error messages.

The project folder contains 3 subfolders:




I'm guessing I need to somehow re-format the database for the newer versions?


ChemAxon e189db4705

20-11-2008 00:49:37

IJC 1.0.7 is really pretty old version. We were supporting upgrade 1.0.x projects in IJC 2.0, 2.1 and 2.2. So now it's a little complicated, but still possible.

There are basically two ways how to convert your data to latest IJC version:

Important: Backup your project before doing anything with it.

1. Export and Import (through external file(s))

- export your data to appropriate file format (each table into a new file)

- start IJC 2.3.1 (or wait for IJC 2.4 which will be released really soon)

- create a new project with local database

- import file(s) into the new project

2. Convert project using IJC 2.2

- download IJC 2.2 and run it

- open your 1.0.7 project in it - you will be asked to upgrade project and also data content (follow the instructions in IJC)

- close project and exit IJC 2.2

- run IJC 2.3 and open this converted project. You will be asked to upgrade jchem data again

- maybe you will need to re-create views (gridview or forms) again, but it should be simple

I just tested the second approach and it works for me. If your data are not in too many tables I would recommend the first approach anyway (you won't need to install IJC 2.2).

Hope this helps. Let us know if you have any problem with upgrade.