Support / Installation files

STEM 7.5a (current)

03 November 2016

Maintenance release

STEM 7.5a is fully compatible with models created with the original 7.5 release, and includes the following updates.


  1. An obscure and apparently random crash in the Editor, sometimes but not always mentioning an ‘invalid type’, has been diagnosed and fixed.
  2. Find and Replace suggests common text, if possible, cf. Copy and Replace, and the algorithm for identifying this common text has been slightly refined.
  3. The selection of icons is maintained after Find and Replace.
  4. Copy and Replace now works properly when copying to a different model.
  5. Prompt only once for the Basis when creating requirements (for a single resource) with drag-and-drop from a multiple selection of services or transformations.
  6. Arrange Visible now respects the new Requirement 2 and Input 2 link types.
  7. View names in the Editor are no longer limited to 31 characters.
  8. Less ‘flicker’ when opening a model with lots of Editor views.
  9. Facility to activate the File menu from any dialog by pressing <Alt+F> re-instated with the latest Windows 10 update.
  10. <Ctrl+Shift+T> still creates new elements, even after cancelling a Find and Replace.


  1. Generated files are still retained even if a model has only been opened recently (but not saved or run).
  2. A more recent .dtm file in the Generated folder is now discarded if you manually replace a .dtl file with an older version.
  3. A recovered, autosaved model now gets the correct relative path for a custom icon file.
  4. Check for expiring soft-licence deferred until after loading command-line models.
  5. A run-time model created with D-STEM now only prompts once to accept end-user licence terms when parallel-processing multiple scenarios.
  6. Bug fixed regarding eSTEM processing of a model name including the ‘.’ character.
  7. LTE example model no longer generates a replication error with STEM 7.5a.
  8. Cable example model included with the 7.5a installer.


  1. It is now optional whether collections should appear First, Last, Inline or By Type in the Elements, Variants and Cost Breakdown tabs when drawing a graph.
  2. Tornado charts working again when parameters are affected by template replication.
  3. The Cost Breakdown tab for results selection in a model that uses template replication now works as originally intended, namely that just resources are listed rather than resource/variant pairs when Linear Selection is not active.
  4. The Cost Breakdown tab also now correctly handles services as RHS elements when an intermediate service specifies Value Chain = Cross Charge.
  5. Some bug fixes for graphs using the new Slice functionality across either scenarios, after a dimension is added or removed, or template variants.
  6. The automatic stacked (column) format of a cost or revenue graph (aggregate result) for several elements in the same scenario no longer incorrectly persists if Change Selections is used to show a demand result (instantaneous, line format) instead.
  7. Copy Picture functionality restored for results graphs and tables (including titles).
  8. The Current View and All Views options now work properly when changing fonts on results graphs.
  9. Scenario results still up-to-date after modifying only the working model.

STEM 7.5a installer

Registered licensees with a current maintenance contract can download the appropriate C-STEM, D-STEM or eSTEM installer.

Download now: C-STEM 7.5D-STEM 7.5eSTEM 7.5

What's new

STEM 7.5 includes a bumper crop of new features such as firmer control of requirement and input driver bases, more intuitive modelling of equipment migration, and parallel processing for scenarios and templates. It also represents a step-change in flexibility and functionality for the results program in particular.

Read more

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