vector_paste throws fatal error when input vector includes a slash

[dchiu911]

Portal hypertension and/or esophageal bleeding <= 6 mos. (Encephalopathy, Ascites, Jaundice with Total Bilirubin > 2)
Chronic hepatitis, cirrhosis, portal hypertension with moderate symptoms "compensated hepatic failure"
Chronic hepatitis or cirrhosis without portal hypertension
Acute hepatitis without cirrhosis
Chronic liver disease manifested on biopsy or persistently elevated bilirubin (>3 mg/dl)
Hepatic disease, NOS

I get a fatal error when trying to vector_paste() with these cell entries because the first cell includes a slash in the "and/or"