SDL TMS 2011 SP5 CU2 | Unable to roundtrip Studio Packages using Spanish - International (ES-XM) as source or target language

Symptoms:
It is not possible to roundtrip Studio Packages that use "Spanish --International--" (ES-XM) after :

Explanation:
"Spanish --International--" (ES-XM) is a language supported only by SDL TMS. In the *.sdlxliff file, the source/target language is identified as "es"."es" does not exist in SDL Trados Studio but when opening the Studio Package, SDL Trados Studio tries to recognise this language and by default maps it to "Spanish (Spain, International Sort)" whose code is "es-ES".

Uploading the Return Package from SDL Trados Studio to SDL TMS fails because the SDL TMS language detection mechanism is mapping the "es" language code to Spanish (Spain, International Sort) instead of "Spanish --International--". This language conflict determines the task upload to fail.

Resolution:
The SDL TMS language detection mechanism can now map "es" to "Spanish --International--", thus allowing files to upload successfully.

Exceptionally, two versions of that hotfix have been made available, one for TMS 2011 SP5 CU1 + hotfix 36470 and one for TMS 2011 SP5 CU2.

SDL-hosted customers should contact SDL Support to arrange for a hotfix to be deployed.

Customers who host SDL TMS themselves should do one of the following: