This SAP Note also works for the smartforms, when developer gets issue in the Text Editor on 7.6 or 7.7 above GUI

2221815 – SAPscript Legacy Text Editor controls are not packed in SAP Windows GUI Installation

http://support.sap.com/swdc

-> Support Packages and Patches
-> Click on tile ‘Software Downloads’ which starts the Lauchpad
-> In the header select ‘SUPPORT PACKAGES & PATCHES’
-> Select ‘By Category’
-> SAP Frontend Components
-> SAPSCRIPT LEGACY TEXT EDITOR
-> SCR LEGACY TEXT EDITOR GUI7.60

-> Support Packages and Patches
-> Click on tile ‘Software Downloads’ which starts the Lauchpad
-> In the header select ‘SUPPORT PACKAGES & PATCHES’
-> Select ‘By Category’
-> SAP Frontend Components
-> SAPSCRIPT LEGACY TEXT EDITOR
-> SCR LEGACY TEXT EDITOR GUI7.60

-> Support Packages and Patches
-> Click on tile ‘Software Downloads’ which starts the Lauchpad
-> In the header select ‘SUPPORT PACKAGES & PATCHES’
-> Select ‘By Category’
-> SAP Frontend Components
-> SAPSCRIPT LEGACY TEXT EDITOR
-> SCR LEGACY TEXT EDITOR GUI7.60