This thread is resolved. Here is a description of the problem and solution.
Problem:
You are preparing your theme for translation and have encountered difficulty registering hardcoded image alt tags as single strings for translation.
Solution:
To register hardcoded image alt tags in your theme for translation, you need to wrap these strings with a GETTEXT call. We recommend reading our guide for developers on how to use GETTEXT for more detailed instructions: https://wpml.org/documentation/support/how-to-use-gettext/
If you require further assistance or have additional questions, please provide your site's Debug information. You can find guidance on how to do this here: http://wpml.org/faq/provide-debug-information-faster-support/
Please note that this solution might be outdated or not applicable to your specific case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the issue persists, please open a new support ticket at WPML support forum.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.