An interesting bug was reported the other day on the Oracle Technology Network discussion forum for Oracle Application Express. The scenario is as follows:
1) Download and install Oracle Application Express 4.2.1 anew.
2) Install a translated version of Oracle Application Express
3) Login to a workspace and navigate to SQL Workshop.
What should look like:
is actually displayed as:
Unfortunately, the buttons of SQL Workshop are not displayed when you install a translated version of Oracle Application Express 4.2.1. [If you had Oracle Application Express 4.2 installed and downloaded/installed the Oracle Application Express 4.2.1 patch set from My Oracle Support, you would not encounter this issue.]
This problem can be remedied by downloading the patch set exception for Bug 16191354 from My Oracle Support and applying it to your APEX 4.2.1 instance.
Note - if you choose to install additional translated versions, it's safe to re-run the patch 16191354 after you've installed all translations.
Update: As of January 29, 2013, the APEX 4.2.1 download was updated to correct this problem. So if you download the apex_4.2.1.zip file (full distribution) after January 29, 2013, you should not encounter this problem and you can safely ignore this blog post.