The translation queue may become unusable for some translators

Overview of the issue

With debug enabled and error displayed on screen, you may get something similar to the following image.

When debug is disabled or errors are not displayed on screen, you will get:

• An empty item in the target language drop-down box (top right, in the filter area)
• The default language as the first item of the same drop-down box

We have noticed two cases where the translation queue was partially or completely not usable, due to a notice being rendered on screen.

The issue is caused by corrupted information regarding user’s languages pairs.

Workaround

Following steps are required to fix this issue:

1. Go to WPML->Translation Management->Translators
2. Hover the mouse over your user’s name (or the affected translator) and click Language pairs
3. Without making any change, click Update

This issue will be resolved in WPML 3.4 release by disregarding corrupted language pairs to avoid this error from appearing.