--- a/gsup_utils.py
+++ b/gsup_utils.py
@@ -187,8 +187,12 @@

 from lxml import etree                  # for XML files

-import fpdf                             # for pdf files
-from fpdf import FPDF                   # which one is needed???
+try:
+    import fpdf
+    from fpdf import FPDF
+except ImportError:
+    fpdf = None
+    FPDF = None

 #
 # modules - requiring installation via pip
@@ -390,6 +394,6 @@
 g.versions["psutil"]               = psutil.__version__
 g.versions["ntplib"]               = ntplib_version
 g.versions["lxml-etree"]           = etree.__version__                  # reading XML files
-g.versions["fpdf"]                 = fpdf.__version__                   # handling PDF files
+g.versions["fpdf"]                 = fpdf.__version__ if fpdf else "n/a"


--- a/gsup_spectro.py
+++ b/gsup_spectro.py
@@ -3827,6 +3827,8 @@
 def assenbleSpectraIntoPDF():
     """Search for Spectra files in to be selected dir and all sub dirs and put into a pdf file"""

+    if FPDF is None: return
+
     #######################################################################################################

     def find_all(ext, path):