Modified Dictionary upgrade error when upgrading from GP2010 to GP2015

Hi,

I am trying to upgrade from GP2010 SP2 to GP2010 SP4 then to GP2015R2. Did not have major issues when upgrading from GP2010 SP2 to GP2010 SP4. It went smoothly. However when I am trying to run GP2015 utility to upgrade from GP2010 SP4 to GP2015 R2. I got error as below when trying to update modified forms and reports after Dynamcis and Company databases upgrade.

I did use C:Program Files (x86)/Microsoft Dynamics/GP2015/Dynamics.set file as lunch file and picked original Dynamics.dic file from original C:Program Files (x86)/Microsoft Dynamics/GP2010 folder.

Here is error log from Update140725_Microsoft_Dynamics_GP.log file.

--------------------------------------------------
Old Product Dict.  : :C:Program Files (x86)/Microsoft Dynamics/GP2010/Dynamics.dic
New Product Dict.  : :C:Program Files (x86)/Microsoft Dynamics/GP2010/Dynamics.dic
Reports Dictionary : :C:Program Files (x86)/Microsoft Dynamics/GP2010/Data/REPORTS.DIC
From Version       : 11.0.2390
To Version         : 14.0.725
Input File         : :C:Program Files (x86)/Microsoft Dynamics/GP2015/REP0.TXT
Log File           : Update140725_Microsoft_Dynamics_GP.log
Delete Files       : True
Read 3628 lines and 1037 commands from input.
Error on line 3628: Unknown report: 'Build Check File Exception'(Command 894)
The Input file has errors.

Please advise what I did wrong and how to fix this.

Thanks in advance.

Huan