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When I try activing my license I get the following error:   Solution When you purchase a license you are supplied by default, a server license, however a Tekla Tedds trial license is a local license. Therefore in order to use your newly purchased license you need to do a few simple steps to reconfigure your machine. Login to your Tekla Online Profile or if you don't already have a profile Create a Tekla Online Profile. Please note: If you have to create a profile you will need to activate and login to proceed Download and install the Tekla Structural License Service on your license server (

When looking at the Server Status in the Tekla Structural License Server Manager, why does the number of In Use licenses not match the number of Users using the program? There always seems to be more User records than Licenses In Use.   Answer The license model used is per host machine so you may run the application on a single host PC any number of times without it using up an additional licenses. The Users list shows the number of seperate uses of the license, which if the host is the same will only count as a single license In Use. For example if you have two users on two machines, namely

Résumé of issue Steel 2D analysis & design (AISC360) Steel member analysis & design (AISC360) Steel member design (AISC360) Steel beam analysis & design (AISC360) There is a potentially un-conservative error affecting design of some square and rectangular HSS sections with slender webs under compression. Occurrence This issue relates to Tedds 2018 from March 2018, Tedds 2017 from March 2017,Tedds 2016 from March 2016, Tedds 2015 from June 2015, Tedds 2014 from June 2014, Tedds 2013 from May 2013, Tedds 14 from October 2011, Tedds 12 from October 2009 and Tedds 11 from March 2009:

Updated - Service Pack 4a [TEDDS-854, TEDDS-856, TEDDS-858] Fixed a problem introduced in the first release of Service Pack 4 which caused Tedds for Word to crash when using dialog's which include access to the help system, for example the Options dialog and the Insert Calc Section dialog. Important If you are running a 64-bit version of Windows you will require both updates. Tedds 2018 - Service Pack 3 Library Access System [TEDDS-597]1 Calc Items can now be moved easily from one library to another. When using the Edit Item Properties dialog you can now modify the library property

Résumé of issue 2D analysis Steel member analysis & design (EN1993) Steel 2D analysis & design (EN1993) Steel member analysis & design (AISC360) Steel 2D analysis & design (AISC360) Steel member analysis & design (AS4100) Steel 2D analysis & design (AS4100) SolvAddSection and SolvSetSection functions There is a potentially un-conservative error affecting all calculations which use the analysis solver where the model includes a section where both the major and minor shear area properties are not zero and are different to each other. Occurrence This issue relates to

Résumé of issue Steel member design (AISC360) There is a potentially un-conservative error affecting the calculation of I shaped members under shear loads along both axes. Occurrence This issue relates to Tedds 2018 from March 2018, Tedds 2017 from March 2017,Tedds 2016 from March 2016, Tedds 2015 from June 2015, Tedds 2014 from June 2014, Tedds 2013 from May 2013 and Tedds 14 from October 2011: Steel member design (AISC360) version 3.0.00 – 3.0.12 

Do I need to install Tekla Tedds 2018i? If you are running a fully up to date version of Tekla Tedds 2018 you DO NOT need to download and install this version. Tekla Tedds 2018i is the same as Tekla Tedds 2018 with Service Pack 3 and the September 2018 Engineering library update installed. If you want to find out whats included please read the following: Tekla Tedds 2018 release notes Tekla Tedds 2018 Service Pack 3 Tekla Tedds Engineering library update (September 2018)

Important If you are running a 64-bit version of Windows you will require both updates. Tedds 2018 - Service Pack 3 Steel/Timber Beam analysis & Design [TEDDS-313]1 - Fixed grid columns in beam analysis user interface being too narrow when windows text size setting is greater than 100%. [TEDDS-334]1 - Fixed error "Failed to create drawing metafile" if Calibri font does not exist on computer. 2D analysis [TEDDS-143]1 - Fixed unhandled exception when opening the combination generator when Windows text size setting is greater than 100%. [TEDDS-191]1 - Fixed "Null reference" exception

Résumé of issue Snow loading (ASCE7) There is a potentially un-conservative error affecting the calculation of drift width where drift height exceeds height of obstruction. Occurrence This issue relates to Tedds 2018 from March 2018, Tedds 2017 from March 2017,Tedds 2016 from March 2016, Tedds 2015 from June 2015, Tedds 2014 from June 2014, Tedds 2013 from May 2013, Tedds 14 from October 2011 and Tedds 12 from February 2011: Snow loading (ASCE7) version 1.0.00 – 1.0.07