Note: Patches end with a letter such as 2.2b2a.
      Patches will only work if run after installing the base version, 
      for example 2.2b2 must be installed before patching with 2.2b2a.
      A base version will typically be over 20 megabytes while a
      patch will be much smaller.

________________________________________________________________
Known Problems:

  Installer sometimes reports an error registering Comcat.DLL
  Clicking "Ignore" makes install finish successfully.

  GenScn now closes open graphs cleanly as it exits, but open lists
  can still cause a crash when closing the program.
________________________________________________________________

2.2 final (4/2/2003)

  New option to display midnight as 24:00 the previous day in lists

2.2 beta 2b (3/20/2003) (Released as a patch to 2.2 beta 2)

  This patch solves a few graph problems and adds the option of
  displaying the end-of-interval time for constant interval data
  instead of the default beginning-of-interval time in a list
  window. For example, the value for the hour from 4:00 to 5:00 is
  by default displayed as 4:00, but the new option allows changing
  this to read 5:00. This feature is available from the 
  "Edit/Date Format" menu of the list window as the 
  "End of interval" checkbox. This option does not change the
  display of times for point data.

  This patch also includes all the features from 2.2 beta 2a

2.2 beta 2a (3/5/2003) (Released as a patch to 2.2 beta 2)

  Allow reading of SWAT output files in GenScn from a different directory 
  than the one the current GenScn project (.sta) file is in.
  (If using an older package, the error "No Date Field Defined..." can be 
   worked around by saving the GenScn project (.sta) file in the same 
   directory as the SWAT (*.dbf) files it refers to.)
  
  Renamed "Model Fit Efficiency" to "Model Fit Efficiency (NS)" and removed
  "Nash Sutcliffe" from GenScn Compare

  Made GenScn Manage Project window resizable to accomodate display of full
  paths to map and data files. Full paths are now displayed in place of
  shortened paths to ensure that the correct data files can be found.

  New variable "InputDir" is set to the directory containing the open status
  file before GenScn launches a script.

2.2 beta 2 (2/26/2003)

  Units can now be associated with data:
    New "File/Preferred Units" menu item
    New attribute "Units" available for data stored in WDM, SWAT,  
    and BASINS observed water quality files
    New "Convert Units" function available in Math tab from 
    "Time Series/New Time Series" menu or "Generate Timeseries" button
    Database file BASINS/models/HSPF/bin/ATCoUnits.mdb contains unit 
    names, conversion factors, and notes on conversion factor sources

  Fixes for daily and monthly axis labeling on graphs 

  PEST compatibility in HSPF

  Reverted to DAO 3.51 because 3.6 caused problems with opening map DBF
  and SWAT DBF files on Windows XP

2.2 beta 1 (11/13/2002)

  Preliminary test of new units functionality

  Change from DAO 3.51 (Access 97 compatible) to DAO 3.6 (Access 2000 compatible)

2.1 final (9/4/2002)

  BASINS data download tool removed, placed in separate package

2.1 beta 5 (4/30/2002)

Changes since 2.0.6d:

  Inclusion of beta version of BASINS data download tool

  Ability to read HSPF output files as time-series data

  New scripting language usable from GenScn (Analysis/Run Script)
  for creating reports and doing production runs of HSPF

  Fixed sample Shena.map changing a line starting:
  LYR 'gis\rf1.shp'
  The portion of that line that reads KEY 'RF1_ID'
  is now changed to:                  KEY 'IDLOCN'
  This allows profile plotting and animation to work for the
  sample data. 

  Feedback can be sent to developers from GenScn (Help/Send Feedback)
  automatically including helpful version information

  Bugs fixed that caused GenScn and WDMUtil to crash when listing data

  Use of HSPFEngine.exe for inter-process access to HSPF

  New internal methods of opening and closing WDM files to allow
  greater flexibility running more than one program that reads the
  same WDM file

  Improved logic for locating commonly used files such as
  hspfmsg.wdm, Status.exe, and Nconvert.exe

  Improved sharing of status monitor by multiple processes so
  status messages can all go to the same place
________________________________________________________________

2.0.6d (9/4/2001)  This patch includes the updates in 2.0.6a, b, and c.

New changes in this patch:

  New 2-timeseries comparison statistics in GenScn (frmGenScnCompare)
  Correlation coefficient/Coefficient of determination, 
  Nash-Sutcliffe coefficient/Coefficient of model fit efficiency

  New timeseries attribute: Geometric Mean (ATCclsTserData)

  Added File/Save Headers menu to Timeseries Data list window. 
  This saves timeseries statistics to a text file. (frmTSlist)

  Sped up Locations/All With Data function (frmGenScn)
  Removed warning when locations with data are not on map (ATCoMap.ctl)

  Improved BASINS observed water quality import

  Fixed crash when changing drive while saving grid or graph (ATCoBrowse)

  Started to use FastCollection (FColl.dll)

  Adding new data files in or below the folder contatining the
  project's .sta file no longer gives an error message. 
  (frmGenScnManageProject)

  Trying to save plot images on another drive no longer causes a crash

2.0.6c (8/8/2001)  This patch includes the updates in 2.0.6a and 2.0.6b.

New changes in this patch:

  WinHSPF correction for output format of exponential values.

  WinHSPF correction for availability of rchres-gqual output timeseries.
  (ATCoHSPF)

2.0.6b (8/2/2001)  This patch includes changes in 2.0.6a.

New changes in this patch:

  Default colors of graph lines can now be specified in GraphColors.txt

  Animation is now affected by the date control (frmGenScn DoAnal)

  Scenario Save As now operates properly with more than one WDM file
  referenced in EXT TARGETS block. (GenAct cmdOpt_Click)

  Generating a new time series not based on an exisiting one now works.
  (frmTSnew AddRemoveDates)

  WDM files added to project are now usable before saving and reloading 
  project (GenProj cmdAdd_click)

  Unloading of all forms when main form closes has been tweaked.
  Application should now close more cleanly on NT. 
  (frmGenScn Form_Unload, GraLis, Gentry p.ExternalForms)

  Aver/Same disaggregation fixed (ATCclsTserData Aggregate)  

  Unnecessary "Save changed status file?" removed (BatchGenScn OpenHspfMsg)

  Scenario buttons re-enabled when Activate screen is closed (GenAct Unload)

2.0.6a (6/15/2001) (Released as a patch to 2.0.6)

  WinHSPF corrected error interpreting met segments.
  (ATCoHSPF HspfMetSeg, HspfMetSegRec)

  WinHSPFLt fixed startup directory problem (modWinHspfLt Main)

  Reading EFDC output files now treats bed elevation as time series.
  (ATCTSFile clsTSerEFDC)

  Profile plot branch selection sped up a little for projects with
  many datasets and hourglass added. (GenPPlt SelectBranch)

  Filling reach details sped up by skipping distance calculation
  on load. Calculation now only done in GenPPlt. (Gentry FillReachDetails)

  Fixed some difficulties loading data and maps for different
  directories (frmGenScn OpenStatusFile)

2.0.6 (6/11/2001)

  Bug introduced in 2.0.5 was fixed: When all datasets in the Time
  Series list had the same end date, the date control was
  unavailable. (frmGenScn GetCommonDates)

2.0.5: (6/6/2001)
  Now reads new EFDC output files which include downstream node
  information. (ATCTSFile clsTSerEFDC)
  
  Added WDMUtil help file.

  Empty datasets no longer cause a crash when added to the Time
  Series list (frmGenScn DispDates)

  Activate Scenario: Save As, then Activate in same session now works,
  Crash when editing a new record before specifying the DSN fixed.
  (frmGenScn cmdSen_Click, GenAct Edit_ExtSources)

  Mouse cursor in main window is no longer an hourglass while
  Activate Scenario window is open. Instead, the scenario
  Activate, Delete, and Add buttons are disabled while the
  Activate Scenario window is open.
  (frmGenScn cmdSen_Click, GenAct Form_Unload)

  Add data from web: Cancel button now works properly and
  downloading binary files (such as WDM) works. (frmGetDataFromWeb)

2.0.4: 5/24/2001
  Fixed reversed order of timeseries in residual and cummulative
  difference plots (cmdGen_Click in frmGenScnPlot)

  Fixed New Timeseries window crash when starting with yearly data
  (frmTSnew)

  Updated HASS_ENT.DLL and message.wdm with instream nutrient fixes

  New option to add data from the web: enter a URL to download a
  data file and read it in. (New Project or Edit Project)
  Cancel button not yet functional, use "X" close button in the
  upper right corner for cancel. (frmGetDataFromWeb)
  Downloading binary files (such as WDM) does not yet work.

  Added WDMUtil to installation package, increasing package size
  by less than one megabyte. Since there are so many shared files
  between these programs and many people want to install more than
  one, packaging them together makes sense. Installer contains
  options to install only the programs of interest.

2.0.3: 5/17/2001
  Reading FEO data accelerated       (clsTserFEO in ATCTSFile)
  Profile plot animation accelerated (DoProfPlot in GenScnEntry)

  Released as a patch to 2.0.2
  First use of new Inno Setup program http://jrsoftware.org/isinfo.htm