Self-correcting strange error

With one of my projects, I always receive this error message when opening it,

   Project loading error.
   The project file failed to load but the error may
   be recoverable.     Proceed with entry?

I always click <Retry> and it seems always then to work.
When, however, I click, <Cancel>, I receive this further message,

   Project loading error.
   An error occurred loading the project.  he code was 4.
   Please contact Support@approximatrix.com for assistance.

A copy of the makefile is pasted after this message,

---
John

THE MAKEFILE
#
# Automagically generated by Approximatrix Simply Fortran
#
FC="F:\SF\mingw\bin\gfortran.exe"
CC="F:\SF\mingw\bin\gcc.exe"
AR="F:\SF\mingw\bin\ar.exe"
TOUCH="F:\SF\fwin\wtouch.exe"
RM=del

IDIR=-IF:/SF/mingw/include/ -IG:/IOLIB/../INCLUDE

LDIR=-LF:/SF/mingw/lib/ -LG:/IOLIB/./modules

SPECIALFLAGS=-g $(IDIR)

PRJ_FFLAGS=
PRJ_CFLAGS=
PRJ_LFLAGS=

FFLAGS=$(SPECIALFLAGS) -fdollar-ok  $(PRJ_FFLAGS) -Jmodules

CFLAGS=-g  $(IDIR) $(PRJ_CFLAGS)

build\PadStr.o: .\Source\PadStr.for
    $(FC) -c -o build\PadStr.o $(FFLAGS) .\Source\PadStr.for

build\page.o: .\Source\page.for
    $(FC) -c -o build\page.o $(FFLAGS) .\Source\page.for

build\Prompt.o: .\Source\Prompt.for
    $(FC) -c -o build\Prompt.o $(FFLAGS) .\Source\Prompt.for

build\R2Char.o: .\Source\R2Char.for
    $(FC) -c -o build\R2Char.o $(FFLAGS) .\Source\R2Char.for

build\RInput.o: .\Source\RInput.for
    $(FC) -c -o build\RInput.o $(FFLAGS) .\Source\RInput.for

build\Send.o: .\Source\Send.for
    $(FC) -c -o build\Send.o $(FFLAGS) .\Source\Send.for

build\SkipChr.o: .\Source\SkipChr.for
    $(FC) -c -o build\SkipChr.o $(FFLAGS) .\Source\SkipChr.for

build\UndLin.o: .\Source\UndLin.for
    $(FC) -c -o build\UndLin.o $(FFLAGS) .\Source\UndLin.for

build\VerLib.o: .\Source\VerLib.for
    $(FC) -c -o build\VerLib.o $(FFLAGS) .\Source\VerLib.for

build\write.o: .\Source\write.for
    $(FC) -c -o build\write.o $(FFLAGS) .\Source\write.for

build\OpenO.o: .\Source\OpenO.for
    $(FC) -c -o build\OpenO.o $(FFLAGS) .\Source\OpenO.for

build\OpenI.o: .\Source\OpenI.for
    $(FC) -c -o build\OpenI.o $(FFLAGS) .\Source\OpenI.for

build\Opener.o: .\Source\Opener.for
    $(FC) -c -o build\Opener.o $(FFLAGS) .\Source\Opener.for

build\OpenE.o: .\Source\OpenE.for
    $(FC) -c -o build\OpenE.o $(FFLAGS) .\Source\OpenE.for

build\LF.o: .\Source\LF.for
    $(FC) -c -o build\LF.o $(FFLAGS) .\Source\LF.for

build\LTrim.o: .\Source\LTrim.for
    $(FC) -c -o build\LTrim.o $(FFLAGS) .\Source\LTrim.for

build\Indent.o: .\Source\Indent.for
    $(FC) -c -o build\Indent.o $(FFLAGS) .\Source\Indent.for

build\LenStr.o: .\Source\LenStr.for
    $(FC) -c -o build\LenStr.o $(FFLAGS) .\Source\LenStr.for

build\IInput.o: .\Source\IInput.for
    $(FC) -c -o build\IInput.o $(FFLAGS) .\Source\IInput.for

build\I2Char.o: .\Source\I2Char.for
    $(FC) -c -o build\I2Char.o $(FFLAGS) .\Source\I2Char.for

build\FindChr.o: .\Source\FindChr.for
    $(FC) -c -o build\FindChr.o $(FFLAGS) .\Source\FindChr.for

build\ff.o: .\Source\ff.for
    $(FC) -c -o build\ff.o $(FFLAGS) .\Source\ff.for

build\Error.o: .\Source\Error.for
    $(FC) -c -o build\Error.o $(FFLAGS) .\Source\Error.for

build\Disp.o: .\Source\Disp.for
    $(FC) -c -o build\Disp.o $(FFLAGS) .\Source\Disp.for

build\config.o: .\Source\config.for
    $(FC) -c -o build\config.o $(FFLAGS) .\Source\config.for

build\Commas.o: .\Source\Commas.for
    $(FC) -c -o build\Commas.o $(FFLAGS) .\Source\Commas.for

build\biofix.o: .\Source\biofix.for
    $(FC) -c -o build\biofix.o $(FFLAGS) .\Source\biofix.for

build\Banner.o: .\Source\Banner.for
    $(FC) -c -o build\Banner.o $(FFLAGS) .\Source\Banner.for

build\AInput.o: .\Source\AInput.for
    $(FC) -c -o build\AInput.o $(FFLAGS) .\Source\AInput.for

build\FIF.o: .\Source\FIF.for
    $(FC) -c -o build\FIF.o $(FFLAGS) .\Source\FIF.for

build\LStri.o: .\Source\LStri.for
    $(FC) -c -o build\LStri.o $(FFLAGS) .\Source\LStri.for

build\RStri.o: .\Source\RStri.for
    $(FC) -c -o build\RStri.o $(FFLAGS) .\Source\RStri.for

clean: .SYMBOLIC
    $(RM) build\*.o
    $(RM) modules\*.mod
    $(RM) ..\Libs\ioLib.a

..\Libs\ioLib.a:  build\PadStr.o build\page.o build\Prompt.o build\R2Char.o build\RInput.o build\Send.o build\SkipChr.o build\UndLin.o build\VerLib.o build\write.o build\OpenO.o build\OpenI.o build\Opener.o build\OpenE.o build\LF.o build\LTrim.o build\Indent.o build\LenStr.o build\IInput.o build\I2Char.o build\FindChr.o build\ff.o build\Error.o build\Disp.o build\config.o build\Commas.o build\biofix.o build\Banner.o build\AInput.o build\FIF.o build\LStri.o build\RStri.o
    $(AR) rcs ..\Libs\ioLib.a build\PadStr.o build\page.o build\Prompt.o build\R2Char.o build\RInput.o build\Send.o build\SkipChr.o build\UndLin.o build\VerLib.o build\write.o build\OpenO.o build\OpenI.o build\Opener.o build\OpenE.o build\LF.o build\LTrim.o build\Indent.o build\LenStr.o build\IInput.o build\I2Char.o build\FindChr.o build\ff.o build\Error.o build\Disp.o build\config.o build\Commas.o build\biofix.o build\Banner.o build\AInput.o build\FIF.o build\LStri.o build\RStri.o $(PRJ_LFLAGS)

all: ..\Libs\ioLib.a .SYMBOLIC